What does this actually mean? That Threads users won’t be able to see content on those instances (and vice versa) once Threads gets its ActivityPub up and running?

I see a lot of of these instances citing privacy concerns, but everything we do on the fediverse is more or less open info. Unless I’m mistaken, Zucc could have already scraped Mastodon data if he wanted so I’m not sure how that’s relevant.

Now, if they were saying they didn’t want their users feeds to be flooded by Threads content, since posts there will almost undoubtedly have more engagement, then that would make sense.