Was I in the wrong?

[Kyuuen]

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!

Following that logic though then all forms of chat are fair game because SE incorporated a chat system.

In the end it's how these systems are being utilized that will determine whether something could be defined as harassment. And if the OP's story is to be believed, then he was indeed possibly being harassed.