At least in the case of the heavy bombers 1) they actually did at least once carpet bomb a German tank division and 2) they have relatively little effect on the GVs in AH.
I seem to recall in
Panzer Commander, by Colonel Hanz Von Luck; in his detailing of Operation Goodwood, a rather large number of bombers knocking virtually the entire 21st Panzer out of action, save for a single Stug battalion, 1 Infantry Battalion, and a single 8.8cm flak battery which wasn't part of the division but was an independant luftwaffe unit out in the middle of nowhere. The Stugs, and flak battery were able to hold off... my memory is fuzzy I'll have to find the book, but I think it was two armored divisions, Canadian and British, who after watching the devastation and the first bit of advance finding nothing went in sloppy with no infantry support and lost around 50 tanks or so before being forced to retreat.
I recall him stating that the Tiger Battalion was really smashed, several of the tanks had been flipped upside down from the bombs hitting near them, one or two guys even committed suicide.
The only reason the 21st was able to hold is they had a 20 Km defense instead of the German standard of 15... if I recall correctly, the Stugs were far enough back that they weren't touched.
As far as the ingame spawn camping goes... I enjoy it, it lets me practice my gunnery, or my bombing, or my flak gunnery without having to drive around finding someone to shoot for twenty minutes. It's also a nice way to farm perks in my little Pz IV F. And when they take down the hangars, I get more perks bringing them back up with supplies. Win/Win.