Presumably people using Threads want that. Or they’ll tolerate it.
They will do it to us, not just Threads users.
Fediverse instances aren’t just providers, they’re communities.
Just like email list serves. Should a listserv block gmail subscriptions? I would again argue not.
Its more like email lists blocking people from other email lists. If there is a massive email list that has continually and specifically coordinated to destroy or consume other email lists and spent massive resources learning specifically how to do this via social manipulation, yes, I would think blocking people from that email list is a very good idea ^.^
It’s tempting to believe the email issue really is some conspiracy to keep the little guy down, but it really is just that a new domain, with low volume, is a strong signal for abuse
Perhaps if it wasn’t already corporate agglomerated, this wouldn’t be so true. But fediverse isn’t email, we have easier indicators for abuse because most content is public and we can guesstimate how much of an instance is “real” users ^.^