It's true only insofar as "every man" is expected to literally mean 100% of men.

I think it's fair to say most men don't believe they ever mistreat women, even if they do.

But as a man, I also have learned and grown a lot in this area over the course of my own relationships. So change certainly happens, and it's important we keep increasing the share of men who work to unlearn misogyny and treat women better.