I agree with your assessment of Messages and I also don't have either the FB or Messages mobile app installed. That said, messages are still working for me in

I agree with your assessment of Messages and I also don't have either the FB or Messages mobile app installed. That said, messages are still working for me in Metal (third party FB app) and in my mobile browser. Even if/when they stop working that way, I figure I'll be able to tick the "desktop mode" box in my mobile browser to set the user agent and get it that way. Barring that I can just check those handful of messages I get via my desktop computer. I guess I just don't depend on FB messaging for anything important so it's less an issue for me. If someone wants to reach me, they can call or text and Hangouts works fine across mobile and desktop on Android, iOS, Windows, OSX, Linux, etc. for group messaging.