I believe they may try, but I think the approach Mastodon is taking isn't necessarily a warm embrace. They seem to be handling this with skepticism and I have read that they have plans to Defederate if Meta tries to exploit Activity Pub in any way.
Y'know for me I don't think I have played that many games this year, but this year I bought a PS5, and did some work on my PC and now I am really enjoying gaming again.