If you look at online sources, dive bombing is considered anything from 45 to 60 degrees, some sources state as high as 80 degrees. I look at 45 degrees at the "glass half empty or half full." I've flown aircraft in a 45 degree dive, it's pretty steep IMO
Oh I bet it is!
From a WW2 perspective - the highly trained dive bomber crews, and the aircraft which could do the true steep angle dive bombing, went well together. The Ju 87 had the considerable benefit of an automatic pullout system which made the dive bombing much safer.
Navy SBD crews tended to do much better in terms of getting hits than Marine SBD crews who in turn did a lot better than USAAF SBD (A-24) crews. The Navy crews also seemed to survive at a higher rate but that's another issue.
The Navy crews did do steeper angle dive bombing, but you could get hits at the shallower angles for sure. And some fighter-bomber pilots did much steeper than 45 degree angle dives.
No World War 2 aircraft was accurate in the way we think of accuracy today, but a well trained dive bomber crew in a real dive bomber could achieve some scary / impressive results.