The shocking news this week was that a couple of admins of large Mastodon instances were talking with Meta (under NDA’s!), so it seems your hope (and mine) will be in vain.

Truth.social was actually never part of the Fediverse. It does use AcitivtyPub, but it doesn’t federate with other instances: https://pocketnow.com/trump-truth-social-network-removes-most-freedom-friendly-features-fediverse/