It is outright dumb and spiteful. It has almost nothing to do with what the player bans because, chances are, they probably weren't going to ban it anyway. They just choose to ban it for an undeserved smug sense of accomplishment at having performed some public service for their team. That's not accomplishing anything. That's just being a troll. And to every troll out there reading this, get banned and stay banned.
Depending on the fotm champ I may ban it as well. This should really be done almost always in bronze Elo because you get so many people who go "oh champion x wrecked me last game he must be super broken op mega super duper powerful." And then they play that champ for the first time ever in ranked and get stomped 0-7 by the end of lane phase.
I mean, an easy way to avoid this is simply not hovering it.
Face of The Mountain?
Such behavior is the mark of a contrary individual. If you don't dodge at that point, you're almost certain to be exposed to a miserable experience complimented by a loss.
