Shit happens, squads of 3 men remaining sometimes go down to 1 from one shell and lead to sudden retreats, and its just kinda cheesy to be able to take advantage of that and get a guaranteed squad wipe. We've all seen plenty of squads surviving their retreat by one hair, after all - why should the Puma be able to avoid those odds entirely for 45 muni?
There are plenty of cheesy things in this game, and this ability isn't the worst offender. Why is it being removed when crushwells still exist? Furthermore, why shouldn't it, there is no rule saying abilities should not kill things.
Speaking of which, the Wehr Sniper's vet 1 ability isn't guaranteed to hit a model any more while retreating too, right? If so, then there's a clear consistency.
Im pretty sure that one auto hits too. Even if it didn't, its hardly consistent for wher to hit X% of the time and the puma to hit 0% of the time.
This was an unnecessary and unasked for change and because according to the patchers the aimed shot was not utility enough, and to fix that they are removing its utility.
Why they didnt just decrease the 1000% to accuracy of the aimed shot to a level where it will always hit vehicles, but leave a chance for it to miss inf, i dont know.