Tldr kinda
He got addicted to benzos and had himself put in a coma in russia to cold turkey it (against advice to ween off it from doctors in north america). Shit got fucky and he got brain damage from it.
Couple levels of lols there since he did papers on drug addiction in the past and his schtick is not looking for easy answers… but thats the one he took.
The benzo addiction and russian coma were definitely things that happened. The brain damage is inferred with the whole “He had to re-learn how to walk and button his clothes”
https://nationalpost.com/news/canada/jordan-peterson-recalls-waking-from-coma-confused-tethered-and-surrounded-by-people-speaking-a-foreign-language