I have one of the "newer generation" smart TVs driven by Roku's interface- completely. In other words, you turn the TV on with a Roku remote and when the TV comes on, you see the Roku interface which you must use to choose which HDMI or game port to use, etc.

I like the interface a lot, but I bought it knowing that at some point, it will not be as cool as it is now. It will probably get in the way, as I'll have to use the Roku remote to browse via the old Roku OS to the port with the box that is the new browseable streaming OS. Maybe the Roku one will get borked by a system update because my hardware is unsupported- I don't know; I hope that doesn't happen, and have had a good experience with my old Roku external box, but it is a possibility several years from now.

Years ago when I bought a TV, never did it cross my mind that "one day the user interface is going to be obsolete".