The admin(s) of mastodon.world have made a post about their official stance, and since (to my knowledge) the same folks also run lemmy.world, it’s probably reasonable to assume a similar stance applies here as well.
Update regarding Meta/Threads: We hear that the Threads app is coming July 6th. It will at first not support ActivityPub, so it can't talk to Mastodon yet. That will be added later. We're very much in agreement with @[email protected] , see https://www.timothychambers.net/2023/07/03/instagram-threads-and.html As he said: ““Watching Like A hawk, with our fingers on the block button.” We will NOT be pre-emptively taking a “Fediblock as a Frist Strike” position.” 1/2