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.
And, given privacy issues and anecdotal reports of battery drain, I'll just forgo messages on that platform if they make the mobile site change permanent.
https://itunes.apple.com/us/app/paper-stories-from-facebook/...
I had to borrow someone's phone 2 days ago to send a quick FB message and it took about 10x longer than it should due to it trying to hide the native interface "it's going away soon, install messenger".
Only by visiting my friends profile and hitting the message link could I actually break out. It'd still take me to the app store but on close my friend's messages were visible along with the box to send a message.
They've also recently added WebNotifications support to the website messenger functionality which leverages the phone notifications as an app would.
When will these fine-grained permissions come to Android?