Ah, the time when I gave a talk at the #32C3 @fsfe assembly, about how fragmented the FLOSS federated social media landscape is:
https://rys.io/static/bringing-free-as-in-freedom-to-social-networks-what-why-and-how-fsfe-32c3.pdf#page=29
It is good to see how #ActivityPub did actually make it better.