It doesn't invalidate what he says, I just don't want to learn from him.

There are a lot of other thinkers and writers (like Sivers) that have whole life values that align with my own that I would rather learn from.

I'm not a fan of radical leftists but when it comes to matters of fact and objectivity one cannot let sentiment get in the way.

Not sure what you are implying here, but I'm not sure that the area that Peterson communicates on can be matters of fact, but like I said I have only read a couple of his older works and has grown the entire social science to that of a "hard science".