Even though, I am not fan of "Everyone gets one bluesky without any consent" (and what happens to our data ?). Having activity pub as a way to communicate between bluesky and Threads really limit what these big evil actor can do to the fediverse.

One "evil actor" having 10 times more use as the fedi is dangerous, having 2 bigs actors 10 bigger than the rest of the fedi, seems to somehow limit the risk. Feel like the feature might more be used by Threads people to talk with bluesky than by Mastodon people to talk with Threadsky