Why hasn't Twitter banned Keith Olbermann?

Beyond Twitter, why haven't they taken Keith Olbermann away for testing and observation?

You can't even make fun of this guy now. Honestly this is #Straitjacket time. No joke. Does he have relatives or somebody who could help? pic.twitter.com/9HwQAcwEa4

— James Woods (@RealJamesWoods) August 29, 2017

Twitchy: James Woods recognizes the time for Olbermann family intervention is here!

AoSHQ: Keith Olbermann melting down on Twitter and alcohol It could be hormonal too...

Instapundit: PJ Media: Is Keith Olbermann's latest Twitter meltdown a sign of late stage rabies?