His followers follow him because he reinforces existing points of view. Nothing wrong with that, just saying that having such following doesn't imply original ideas.
I recommend the "what is true?" making sense podcast episode (https://samharris.org/podcasts/what-is-true/). It helped me better understand Peterson outside of the spotlight generated by him touching the controversial topics if our society. My opinion on him after that interview is even less flattering: he seemed interested in bending terminology and logic itself for the benefit of crafting a worldview he deems innate to humans, instead of researching our nature though inquiry. The feeling I got was that of an erudite anti-scientist.
In particular, the anecdote about how Peterson wanted to be a preacher.
If that were the case, he wouldn't have the massive following he does.