Whether desktops are being forced kicking and screaming to be reduced to a phone screen on their landscape computers remains to be seen. I'm hoping that the testing was device wide just for the ease of programming and experiment and that indeed the site will allow normal desktop viewing when all said and done.
As I've said about a million times by now, I HAVE "normal desktop viewing." I have never lost it. I have no idea why you're seeing what you apparently are seeing.