if they were decent people, that would be one thing. but if they're going to be poisoned with the same faux-libertarian horseshit that strangled twitter, I don't see any value in supporting their protocol. there's always another protocol.
but assuming I was willing to play ball and support this protocol, they STILL haven't solved the actual problem that no one else is solving either: your data exists somewhere else. until there's a server that I can bring home and plug in with setup I can do using my TV's remote, you're not going to be able to move most people to "private" data storage. you're just going to change which massive organization is exploiting them.
I know, I know: hardware is a bitch and the type of device I'm even pitching seems like a costly boondoggle. but that's the business, and if you're not addressing it, you're not fomenting real change; you're patting yourself on the back for pretending we can algorithm ourselves out of late-stage capitalism.
[0] *potentially/eventually
Quite some BSky users are publishing on their own PDS (Personal Data Server) right now. They have been for a while. There are already projects that automate moving or backign up your PDS data from BSky, like https://pdsmoover.com/