And here’s what’s saddest: the question itself is moot.
Because mastodon.social wouldn’t block it.
Instead, we’d hear about how Meta joining the fediverse is a Good Thing™.
This would be about a year or so before Meta or some other major instance with major Silicon Valley money displaces mastodon.social as the primary fediverse instance.
At which point maybe a certain someone will realise that legitimising Big Tech-style scale and centralisation is a silly strategy when you’re not Big Tech.
But this is inevitable. It’s written into the design of ActivityPub.
It could be delayed using social pressure but I’m not seeing that from those from whom it would matter.
So it’ll last for as long as it does. Hopefully, that’ll be long enough so we can use the fediverse to bridge off to actually decentralised alternatives like the Small Web.
(I know I’m working against a deadline here. I just wish we’d do everything we could to keep the fediverse as a stopgap for as long as possible.)