I'm pretty sure he does. He's a psychologist, it's his field to know about human behavior.
I think nyms are only needed if your government seems likely to become very oppressive in the near future and punish you for past political wrongspeak. That's unfortunately true in all Western countries right now. The unfornate downside is much less self-control over one's behavior.
There can be many reasons why someone would prefer anonymity, but regarding Peterson's take on social media, I think platforms can work without having to segregate the fully ID'd accounts from the nyms while still being productive. There are other ways to disincentivize bad behavior.
Yeah, I was far too categorical. There are many reasons. And I disagree with Peterson on the whole. But I highly doubt he would be swayed.
