Almost everyone could benefit from learning something but many people either do not have the time or would benefit far more from learning a particular skill or trade rather than Bayesian math and how to identify cognitive biases.
I'm not disagreeing with this at all. But given the option of teaching someone nothing or teaching them this? I think it's a net gain for them to learn how to change their mind. And I think most people have room in their life to pretty easily be casually taught a simple skill like this, or at least the basics. I've been teaching it as part of casual conversations with my roommate just because I enjoy talking about it.
But given the option of teaching someone nothing or teaching them this?
But that isn't the question.
I think it's a net gain for them to learn how to change their mind.
I think it is a net gain for a person to learn the arguments of Christian apologetics, that doesn't mean it is worthwhile for everyone to learn the arguments of Christian apologetics. Time is a limited resource.
I've taught aspects of rationality to lots of people because I like talking about it too. But my friends and family have learned it as a side effect of doing something they would...
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
If continuing the discussion becomes impractical, that means you win at open threads; a celebratory top-level post on the topic is traditional.