You can see what that "bastardization" leads to, were it any more influential, in the example of IL-2. As a result, in IL-2 people use trim in all the situations where a real life pilot would not... upto the extreme of the so-called "bat-turn" cheat by using elevator trim mapped on a slider axis.
As it is, I think that combat trim, while an artificial/unrealistic device, ironically, adds more to realism than the realistic device of manual trim, which somehow promotes unrealistic use/abuse.
ps) going max trim to minimum trim in a split second, even if it is mapped on a slider axis, is impossible in AH, isn't it?