This already happens, not with Meta, but with everyone having to implement Mastodon's ActivityPub implementation quirks (which there are a lot of). So for me, a

This already happens, not with Meta, but with everyone having to implement Mastodon's ActivityPub implementation quirks (which there are a lot of). So for me, as a developer of a small and niche Fediverse project, nothing will change. I'll still be here, minding my own business, while some large(ish) entity is doing stupid things that I have no intention of following up on. For you as a user, maybe things will change, but I doubt that people that invested in the space until now will be deterred by the entrance and, eventual exit of Meta.