NO RESPECT for GM's

1. You can't hang out people in the forums.
2. He actually only says he don't care about the GM's, so not a insult to them.
3. You can report insults, but a little F words between players when you get angry in game is usually tolerated, he might get a warning.

Complaining about something like this, is a little childish. It's not like he goes over the top with bad insults to you and from what we see in the picture, we can guess that you provoked him earlier on.
My tip is to grow up and ignore stuff like this.