He's a great speaker, undoubtedly, but considering what he read since his childhood, I'm wary about giving too much heed to him.
The wiki lists as influences: George Orwell, Aldous Huxley, Aleksandr Solzhenitsyn, and Ayn Rand, two of which were dystopian writers (inculcating fatalism and pessimism) and Rand was pretty messed up in the head, elevating human reason over religion (human reason alone cannot solve our problems) and rejecting altruism (which is a natural occurence). Solzhenitsyn, despite relating events of Soviet atrocities from a Christian perspective, seems to have at least inoculated Mr. Peterson against Communism.
He equates the radical left with Marxists who he says are no better than Nazis and says he won’t be the tool of a “murderous ideology.”
The Nazis were able to win over many former Communists to their side because they perceived that the Communists had nowhere better to turn to. The people who came over to Communism were often denied a look at other worldviews.
Anyhow, a man beset by fear is obviously not in his best mindset. It's uncertain how much of it remains with him today.
“I was obsessed by the Cold War,” he said. “I had nightmares about nuclear destruction on a regular basis. And by the time I was 17, that’s pretty much all I was ever thinking about.”