First of all, you were banned before for annoying Rotondo. I didn't do those bans, but I agree with them.
On the server we allow non-admins to use the F8 camera to make building easier.
Yesterday you thought it would be funny to F8 into other players' faces to lag them. We told you to stop.
Today you joined and presumed I was AFK, then proceeded to F8 into someone's face right in front of me.
I wasn't AFK, and you were banned.
You are a noncontributing player to the server. If you are going to cause trouble, then I see no reason to keep you around.
Do it again and you will be permanently banned.