Why Peterson's talks are controversial escapes me. The useful thing he does is to talk about Human Nature 101 and Adult Life 101. Maybe some people do not want to learn about human nature or adult life.
The only thing remarkable to me is that these things need to be said. Basics. A life worth living has to be constructed thoughtfully, in my view. I find it sometimes needs revisions, if not tweaking, because the things that mattered to me at 25 are no longer the most important things to me now. I like to think I have gained a little bit of wisdom.