My old roommate worked for Open Phil, and was obsessed with AI Safety and really into Bitcoin. I never was. We still had interesting arguments about it all the time. Most of the time we just argued until we got to the axioms we disagreed on, and that was that.
You don't have to agree with the Rationalist™ perspective to apply philosophically rigorous thinking. You can be friends and allies with them without agreeing with all their views. There are strong arguments for why frequentism may be more applicable than bayesianism in different domains. Or why transhumanism is a pipe dream. They are still conversations that are worthwhile as long as you're not so confident in your position that you think you might learn something.