I don't find emote spam to be harassment. Because emotes are something Square-Enix put into the game, so they deem them acceptable language. But to each their own.

Normally when I tank, I tell everyone that I'm the boss and I can pull what I want, and if they don't like it--they can tank, or quit! So you just kicking them without offering the choice is harsher than I would be. So I approve!