A growing number of instances (mainly of Mastodon so far) are signing an ‘Anti-Meta Fedi Pact’, pledging to block any instance owned by Meta in the fediverse.
I don’t know how big this will get or how effective it will be, but if you run a fediverse instance, you should take a look at this https://fedipact.online/
The last thing I personally want is reintroducing Silicon Valley cancer back into the Fediverse. Let’s keep them away. No ads, no algos, no bullshit.