There's a really significant difference though: Peterson is using this to advocate for a worldview in which the problems in society are a result of individual weakness, and the best thing for you to do is just become self-actualized and pull yourself up by your bootstraps or whatever instead of actually coming together and changing society. That's really different from viewing elements of common left-wing discourse as problematic because they prevent people from effectively coming together and changing society. In addition, Peterson focuses explicitly on men as part of an agenda of promoting reactionary gender roles. This is also very different from advocating for everyone to become more capable, and noting how certain aspects of left-wing discourse may specifically impede this with certain people. Furthermore, Peterson makes this their primary argument, the thing they most acutely focus on, which is different from simply observing that something happens alongside many other social phenomena that are also discussed.