He wrote an article a while back insulting the morals of a few colleagues in the Haskell world. When I went to share it with said colleagues I realised he had a

He wrote an article a while back insulting the morals of a few colleagues in the Haskell world. When I went to share it with said colleagues I realised he had an account on our internal slack. He had previously worked there on said technologies that he was then slandering, something he hadn't made public.