Take everything Jordan Peterson says with a massive mound of salt. He has a long history of spouting off controversial opinions on topics without much (if any) evidence backing those opinions.
Which part of people becoming depressed and/or turning to opioid addiction (or both) after becoming unemployed is controversial?
Jordan Peterson has become a very politicized figure in a very homogenous political environment (academia) which seems to be the primary source of controversy. So I wouldn't expect to find many clear answers down this path.
I'm on the fence about him myself but do you not see the irony in your comment?
No, because the idea that JP is a hack is not a controversial opinion among academics.