Then apparently he went on twitter and admitted he had all kinds of mental illness.

Lucky he didn't on Reddit. He would have violated the sitewide rule (which you denied in the past, but it was absolutely real).

I think I got comments deleted on KIA or KIA2 or both for calling him mentally ill even though he was the one saying it himself.

Must have been after I was there, but in that case, the filter should have caught it. 'Mental illness' may not be used, because they randomly nuke comments containing it, even not haivng to do with troonery.