I don’t understand how ActivityPub works that well and I haven’t used Threads so maybe I just doing get it.
But why would we have to worry about defederating Threads when it’s a Twitter clone? It doesn’t have communities and such so I would think it’s not compatible. We’re not federated with Mastodon instances right? This seems like something for Mastodon to worry about. How is a Lemmy instance refusing to federate with Threads relevant?
If this where to happen, my guess is it’s the same as Mastodon and many other platrforms that are also microblogging!
For example, if you “mention” a community from Mastodon within a post the post will show up on that community. Here’s an example I just posted from Mastodon to Lemmy: https://geddit.social/post/183439
And the other way around too… without federation, you couldn’t follow a lemmy user on Mastodon and see their posts and comments as a timeline.