I recall a comment from Jordan Peterson, a clinical psychologist, saying to "aim low" when starting from a difficult perspective, and slowly increasing from there.
Of all the people you could have quoted, I think you chose the wrong one. Jordan Peterson has a persona and reputation that extends well beyond simply being a clinical psychologist, and that colors the issue.
I've heard a few people say this but it's never been explained to me. What exactly are you talking about?
I know a number people don't like him but it seems to be mostly a negative reaction to help they need rather than a legitimate argument against what he's said.