Comment by red_trumpet

5 days ago

You can actually post links of the form https://signal.me/asdf. But https://signal.me/#asdf is blocked. That supports you point of view, I guess?

If you can post links in the form of signal.me/asdf then yes, this reinforces my point that they've probably automatically flagged the top-level domain because of how these /#me links are constructed by Signal.