This guy got kicked out on his own fault, couldn't cope with that and went full retaliation/revenge nuclear and attacking especially those people how said "no" to him at some time, one of the reasons why he got kicked out. Only after being kicked out he went. LWN covered this story already, albeit this is 2020 and much happened (for the worse) in between : https://lwn.net/Articles/814508/
Statements of other communities about this guy:
https://fsfe.org/about/legal/minutes/minutes-2019-10-12.en.p...
https://openlabs.cc/en/statement-we-have-been-a-target-of-di...
https://communityblog.fedoraproject.org/statement-on-we-make...
He also have been banned in other communities, like FSFE, FOSDEM, Fedora, Openlabs, GSoC…