I am betting you are looking at the devices listed when you click the lightbulb icon in the bottom menu. Those that show unsupported there are not "unsupported" by hubitat in the sense that they won't work. They are just unsupported in that they have no function (yet?) in that particular area of the app. In the old app, they just did not show up I believe.
By the way, there is an option to hide unsupported devices if you click the 3 dot menu in the upper right. I think they added them because people were complaining that the app was not showing ALL devices and thinking that they "lost devices". Now, it shows all devices and people are commenting about the ones that show unupported.
