This essay ignores the issue I have always found puzzling. If the Ranger was a fully capable fleet carrier why did the USN borrow Victorious? The effort to convert Victorious into a quasi USN fleet carrier was substantial. It spent a month in Norfolk being substantially modified to handle Avengers which it was incapable of landing at that time. As it turned out these modifications were not enough and in the end Victorious operated Wildcats only while its Avengers were transferred to Saratoga. In addition its communications systems were replaced with American equipment. After conversion it spent another month working up at Norfolk learning how to operate as a US carrier. It spent another 2 months in Pearl Harbor working up and getting further modifications to the arrestor gear to try to solve the Avenger's landing issues. It took 4 1/2 months to get Victorious combat capable. in the mean time a lot of Avengers had been lost in accidents, some fatal.
Ironically at the same time Victorious was in Norfolk, Ranger was also in Norfolk undergoing a refit and doing 2 ferry trips to Casablanca. Victorious sailed for the Pacific on February 31. Ranger was back in Norfolk on March 10 and embarked the 4th AG. After some training she set sail for Argentia Newfoundland arriving on April 4. I'm not sure exactly what Ranger did there for the next 3 months but I am sure the Royal Navy could have covered it particularly since they would have retained Victorious. In the meantime Victorious was still working up In in Pearl Harbor. Ranger could have completed her vital ferrying trips and still been in have been in Pearl Harbor at the beginning of May ready for action at the same time Victorious was. She could also have stayed in the Pacific all though 1943. There would have ben no need for Ranger to go to Scapa Flow as Victorious would be there.
The point is that it would have been far more expedient to send Ranger to the Pacific instead of Newfoundland. The simplest solution is usually the best.
The Ranger only participated in 2 actual combat missions in the entire war. There are a litany of excuses given as to why it was kept out of combat except for these two occasions but applying Occam's Razor the simplest explanation is that the USN did not have confidence in this ship as a combat vessel.
It doesn't ignore your point at all. It addresses it.
The USN had a requirement for an aircraft carrier to support its operations in the western Atlantic. Page 229-230 post Torch
"The solitary Saratoga was then in need of reinforcement, but the lone Ranger was already the only fleet carrier
in the Atlantic, as it had been since June without any radical improvement to
the Atlantic situation.
The role of the Atlantic Fleet, the calls upon it, and the
threats faced in the European Theater had changed but little. At the close of
1942 the danger of the Vichy fleet was finally settled for good, but the status of
the German and Italian fleets was no less threatening. Indeed, the new Allied
supply lines to a tenuous beachhead could have been inducement to greater
activity by Germany or Italy."
"Churchill's request for Ranger revealed a new concern for the possible
resurgence of German naval forays into the Atlantic. Intelligence had assessed
the German aircraft carrier Graf Zeppelin as nearly ready.67 The implications
of a balanced German squadron operating against either the Atlantic or Arctic
convoys were manifest. German capital ships with integral air support would
be harder to track, harder to catch, and harder to overpower. Half a year prior
during the Indian Ocean Raid, Japan had demonstrated in the Bay of Bengal
how effectively a carrier teamed with cruisers could sweep a sea of shipping.
The quick dispatch of all shadowing Catalinas by Zeroes indicated how difficult
it would be for aircraft to shadow a force protected by Messerschmitts. The
German fleet in Norway was a menace in itself but development of the Graf
Zeppelin played upon the worst fears of the Allies."
At that point in time the Allies had virtually no knowledge of the state of completion of the Graf Zeppelin. In March 1940 the Admiralty thought that she might complete in April / May 1940. Then the Germans moved her from Kiel to Gdynia where aerial recce had difficulty keeping tabs on her due to the range involved. She was then moved back to Kiel in Nov 1942 to allow work on her to restart. It didn't finally cease until April 1943 when she was moved to Stettin and laid up. So it is only with hindsight that we can know that the threat was not real.
Despite the failure of the KM at the Battle if the Barents Sea in Dec 1942, Donitz persuaded Hitler to keep some of the big ships operational. By spring 1943, Tirpitz, Lutzow and destroyers had been joined by Scharnhorst in northern Norway and a breakout attempt into the North Atlantic couldn't be ruled out. Through most of 1943 the USN maintained a number of its fast battleships in the Atlantic Fleet to cover such an eventuality. And they needed a fleet carrier to support them.
South Dakota Feb after her repairs post Guadalcanal -Aug 1943
Alabama - from completion until Aug 1943
Just because a breakout didn't occur, that does not mean that the Allies didn't perceive a threat that had to be covered. If the Home Fleet didn't successfully intercept a breakout attempt, US interests in the western and central parts of the Atlantic would be immediately threatened.
US policy since 1941 had been to maintain a reasonably strong Atlantic Fleet with at least one carrier. That served as a backstop for the RN allowing the latter to redeploy ships from home waters to crisis areas like the Med and IO. For example, in 1941 by the US agreeing to use the Atlantic Fleet to escort convoys to the MOMP south if Iceland, the old R class battleships could be withdrawn from convoy escort, refitted and sent to the IO late 1941/early 1942.
And then later at the Casablanca Conference in the second half of Jan 1943 (bottom of page 231).
"King achieved success at the conference. He obtained the acknowledgement
that the fleet dispositions present in the Atlantic were sufficient and that all of
America's new construction could be deployed to the Pacific.70 For the price
of one fast carrier and two fast battleships, King obtained the right to deploy
all new battleships and fleet carriers to the Pacific"
And that is where Ranger became a pawn in, for Admiral King, in a far bigger game than simply sending another carrier to the Pacific.
The naval war in WW2 was played out on a world stage with navies moving pieces around with thoughts, not just for the immediate use of the ships involved but also with a view to a much bigger picture.