X is blocking links to Signal, a secure messaging platform used by federal workers

[AZJonnie]

15. What this actually means is that if you post a link to your Signal account on X

Like you make a post saying "Hey, everyone can chat with me at accountnumber.signal.com, hit me up!", either publicly, or via a Direct Message to another user (like our DU PM system), that message will not post or send.

This means absolutely nothing outside the context of X, at least for now. With Starlink also in his control, who knows, but I doubt he messes with it there.