These banned persons are probably kids that used the new found secret (aka developers) menu.
Switched to an guest-name and started to troll around online...thinking they are funny.
Got a "report" on their ass...and PD reacted.
I totally agree that PD needs to ban those people as it infects online gameplay.
Online hybrid lobbies are still open and people playing, so no need to be -overall- scared
At least that is my opinion, shoot me when I'm wrong!