I havent noticed a LOT of crashers to be honest. I do play with the same people most of the time, but still, not seen many crashers.
Of course there are some, but once you know who they are, you know to keep peppering them, and not give them a chance of crashing (if they try, just hit the just before they crash and you get the kill).
I actually think it is a game with a lot of cool players, if a bug like this was in COD or something, it would be exploided non-stop. The people playing this game, have good sportsmanship
also.. do not be to easy with your judgement of 'that was a crash', sometimes a few hits in the elevators, can make the plane unflyable, and with not elevators to pull up with, it will most likely result in a crash that looked intentional.
And it might depend on the plane of your opponent, a bf-109 with a few hits in the wings is 'no problem', but I find a spit with a few hits in the wings, wayyy harder to keep under control.
What difficulty are you playing? I'm always on realistic, and I dont see many crashers there.. so if you play arcade, you might want to try the step up