Yeah, he's really...odd.
I guess this covers more-or-less the same things
Rapper deals in antisemitic tropes in interview after he wore ‘white lives matter’ T-shirt
www.theguardian.com
This is an interesting point, though
I mean, it reminds me of some other celebs who went very strange. Bobby Fischer, the chess genius, for example, became very anti-Semitic, despite himself being Jewish. Then there's David Icke, the sports-presenter not-at-all-genius - no idea what his 'issue' is, but he very suddenly turned from Alan Partridge into Lydon Larouche.
Oh, and Sinnead O'Connor went rather odd in a similar way (no anti-Semitism, to be fair).
I don't know if you can separate the bigotry and the mental health stuff as simply as that psychologist says - it's as if the bigotry is just out there in the culture but the mentally unwell are prone to pick it up and run with it. Not sure how much that's a choice they can be held morally culpable for or not.