Meta announced that users on Threads will be able to see fediverse replies on other posts besides their own. In addition, posts that originated through the Threads API, like those created via third-party apps and scheduling services, will now be syndicated to the fediverse.
Lemmy doesn’t implement Mastodon (which is the fediverse version of Twitter), only their own Lemmy one (Reddit clone). Kbin and Mbin implement both, as does pyfedi/piefed.
Why does Lemmy not interact with Mastodon if the other two can?