It's not about the items what angers me. It's about they never told idling is against the rules.
Besides the idling program doesn't even need to have TF2 files on your PC to work, so the argument about it interfering with game files is invalid as some people try to say(So people who idled on servers should also be punished for something what was never against the rules). And people would have stopped if Valve had warned them before, but no, instead punish them for something what wasn't against the rules before + call them cheaters(cheating is taking advantage over other players, which is not possible with this program as the item drop rates are same, and its basically same as idling on servers, just wastes less PC resources).
There, I'm done with my rant.
Good thing I'm not very dedicated to this game. :o