My post on Facebook about this mess: FB/Meta is deleting any links to Mastodon as 'violating community standards,' including older posts. And when you try to add a Mastodon URL as a contact link in your public info pane FB will not let you save it. That throws some light on Meta/Threads' actual commitment to integration with the ActivityPub network and makes me even more of a proud supporter of the Mastodon project.
https://media.mas.to/masto-public/media_attachments/files/111/573/350/623/369/137/original/daf7958238b0bd10.png