That depends on whether Goeben was the only reason for the Ottoman Empire joining the war. Or a minor factor.
If Goeben was the reason Ottomans joined in ww1 then it's escape can be classed as a disaster as it meant all them deaths could have been avoided. The break up of the Ottoman Empire created modern states like Syria and Iraq so again cause and effect.
I am not blaming RN for Syria today but the domino was pushed in 1914 and here we are today.
The Ottoman government was actually split on the issue... the older, higher-placed officials wanted to maintain neutrality as long as possible - and the younger officials wanted to see the British & French pushed out of the Middle East.
That latter faction had already signed pacts with Germany committing the Ottoman Empire to war against the UK if the UK and Germany went to war against each other, and after that event the Ottoman "Young Turks" agreed to a timetable for a declaration by the end of 1914. This might still have been forstalled by the older faction, until the 31 July 1914 seizure by Britain of the two battleships that were basically ready for handover to the Ottoman Navy...
Sultan Osman I, commissioned into the RN as HMS
Agincourt, and
Reşadiye, commissioned into the RN as HMS
Erin. Note that Ottoman crews for both of these ships were already in Britain preparing to accept the ships.
That insult, combined with the appearance of
Geoben &
Breslau and the German gifting of those ships basically silenced the neutrality faction, and finalised the war pact. In the event, Captain Souchon got the Ottoman part of the war started off a bit early with his attack on the Russians - but it is probable that even without the German ships being present that the war faction would have prevailed (although sometime in 1915, rather than late October 1914).
