Trainer use? Yeah, I can see how they'd take that as cheating. If they were banning because of the cheats they threw in I'd see that as unfair, but I'm guessing that the trainer doesn't deactivate achievements like their cheats do. So I understand where they're coming from.
Honestly, they made a great game with one of the best concepts of storytelling in an RTS, I'm not going to start boycotting just because some cheaters expect to be able to do whatever they want.
I'm in the 'it's just a game, get over it' crowd.