As others have said already, they won’t do that anyway … but in the hypothetical, unlikely scenario that they announced that they do, indeed, want to join the Fediverse, I would be super sceptical about their incentive. Do they want to somehow take over the various platforms one after another to monetize that content? To they want to screw up the Fediverse deliberately so the “redditfugees” that came here don’t have a reddit alternative anymore - to eliminate competition? I wouldn’t trust them to join for a “good” reason. Not after all the lies, slander and obvious, blatant bullshit Spez has pulled off.
He had multiple chances to stop the dumpster fire from burning, but instead fetched the gasoline. I’m all for giving people a “second” chance, but not a third, and definitely not an eighth or so chance. That time is over.