That is the debate. Apparently there is a game-breaking issue here, if the game is broken to the point that Il2s were being used (quite successfully) as base defenders and mixing it up with far more capable aircraft and coming out the victor because of F3.
So, considering the giant uproar for and against both sides of this issue, its ramifications for other planes, etc, I would say that's pretty darned game-breaking. Not as in the game won't run, but as in how people play the game and how they are voicing their opinions.