The TV I have has never had an antenna cable plugged, or an internet connection. It’s, from day one, been a large HDMI monitor to an Apple TV, a Nintendo Switch and a C64 Maxi with some other devices plugged in from time to time.
It IS possible to ignore the TV’s software most of the time (mine, luckily, isn’t intrusive at all) and use it as a conduit for a much cheaper and easily replaced (or hacked) device.
I remember how surprised the engineers at [manufacturer redacted] were when I told them they had everything needed to turn their TVs into thin clients and meeting room monitors right into the Linux firmware just a compile away. I’d totally love a 35” X terminal in 2008 with Ethernet and a couple USB ports.