Good stuff. One aspect I think that gets overlooked is the benefit of working together to combat these self-serving denial myths. Echo chambers abound, both on social media and in real life. By working with others, we can show deniers that they are in a minority and so burst their denial bubbles in a way that one individual can't do. https://www.psypost.org/2019/12/comment-threads-can-influence-climate-change-attitudes-by-altering-perceived-consensus-55013

https://www.desmogblog.com/2021/03/19/social-media-slow-spread-fake-news-misinformation-study

There is also the issue of what I call 'functional denial' - where someone accepts the science and the seriousness but has zero intention of changing their own behaviour (e.g. by choosing to stop flying). It's all "somebody else's problem. "

Most people I know fall into that category. I find it harder and harder to hold a civil conversation with them.