The IndieWeb’s is a rather sophisticated syndication philosophy. Too bad I’ve got such a disdain for social media that I’d never explore it personally. It’s a good approach for working on other people’s stuff though: think Facebook’s (Meta) instant RSS articles (dies April 2023), podcast feeds, or any other (kinda) bi–directional site syndication mechanism.
The hypothetical outcomes/incentives of POSSE if it was done by everyone is an entertaining thought experiment.