Listen, Getting kicked for afking dosen't have anything in common with ninja items, And there is no way a GM would ban a person for kicking a toxic player out of their raid, unless they roll first and THEN he gets kicked, but then that's obvious.
Oh but they do, And as long as the leader says what the rules are before the raid starts, you are very much free to leave if you don't like it.
Most leaders actually lead the ICC raids because they make money from the BoE's and Primos they reserve, and most even state themselves that if you fail or mess up, you get loot banned.