I’ve been doing POSSE for a while now and it had helped me immensely by saving time and stress. Basically every time I post something on a 3rd party site I store the content locally. Currently only in Obsidian and some locally cached videos and articles (TubeArchivist and Raindrop) When I get dragged to the same argument or topic again, I can just grab my old comment, maybe edit/update it a bit and post it. For some stuff I have longer blog posts I can link to, for some they are images and graphs.