It should come as no surprise that the lemmy.ml [http://lemmy.ml] admin team
took about 2 minutes to decide to pre-emptively block threats / Meta. Their
transparent and opportunistic scheme to commodify the fediverse and it’s users
will not be allowed to proceed. We strongly encourage other instance...
While the title may be clever, Threads is an Instagram creation, not one of Facebook, and while both are products of Meta, Facebook content (and even Instagram content) and Lemmy content would never co-mingle.
Instagram has been owned by facebook/meta for 80% of it's existence. The concern isn't that Facebook or Instagram content would show up on lemmy/mastodon.