@zbran1If you were intentionally farming the AI for unocks, then I think, yes they would see that as exploiting, and I think this is where the problems has arisen.
They have no way to check if people were intentionally 'Farming' for unlocks, or if they were just playing the game mode that had been provided for legitimate reasons.
This is where I believe the False bans are coming from.
They've instituted a policy of;
IF Player A kills > X number of AI - OR achieves Y number of unlocks over Z time-frame - then ban.
So people playing for legitimate reasons would get banned along with people exploiting the ability go gain unlocks from said mode.