I might not be understanding something about the fediverse, but isn’t this like if you couldn’t send or receive email from a friend because you use gmail Google decided to block @icloud domains?
Like, you’re not forced to follow or interact with it, and are free to block it if you can think of a reason to, I just don’t see why such an open platform used to limit users in this way
This is called “Embrace, Extend, Extinguish”. Microsoft coined the term internally for their responses to open standards in the 90’s and 00’s.
https://en.m.wikipedia.org/wiki/Embrace,_extend,_and_extinguish