Messenger-with-a-phone-number-account is just a Facebook account in disguise. They just don't show you the login credentials. Under circumstances, you can obtai

Messenger-with-a-phone-number-account is just a Facebook account in disguise. They just don't show you the login credentials. Under circumstances, you can obtain the login token to log in the web interface and it would behave just like a Facebook account with some restrictions. It might look different to most people, but given one still gets a "restricted" Facebook account created behind the scenes with a messenger account, I don't think people understand the privacy implications of that. See my other top-level post for my take on the issue.