I’ve noticed that lots of accounts that post dismissive, low-content comments like yours have an “about“ section in their user profile that matches the exact fo

I’ve noticed that lots of accounts that post dismissive, low-content comments like yours have an “about“ section in their user profile that matches the exact format of about: [ my public key: https://keybase.io/<Hn https://keybase.io/<Hn profile name>; my proof: https://keybase.io/<Hn https://keybase.io/<Hn profile name>/sigs/n_-<text matching [a-zA-Z0-9]+> ] Complete with the opening and closing brackets. Why is that?