Carl Sagan was recently banned for personal insults: https://theden.breakingnewsandreligion.online/2020/09/15/why-banned-4/
However, he is right back to the same behavior already:
I already said I had a citation but it had later been removed.
Please stop being an obnoxious prick, if possible.
http://disq.us/p/2c2su3r