To me this sounds like us de-federating them early on to avoid them de-federating us. It’s an open framework enabling multi domain interoperability. As long as fediverse rules aren’t violated no one should get defederated imo
Again tbh, I don’t really think Meta needs Fediverse. They already have Facebook and Instagram. All they need is add one link and they’ll have way more users than the Fediverse has in a matter of hours