I would happily pay for a dumb TV, if they existed. They don't seem to anymore.
I have a Samsung Q-series TV now and tried using the smart TV apps for a while, but many were buggy and often had audio/video desync issues. I might blame part of that on the soundbar, but I gave up and got an Apple TV 4K and haven't had any issues at all.
A recent Jeff Geerling video dug into this subject. [0]. Sharp NEC [1] makes and sells TVs without any "smart" junk (they're mainly aimed at being 24/7 monitors/displays in businesses). They're significantly more expensive than consumer TVs, but part of that is likely to accommodate 24/7 usage.
I have a Samsung Q-series TV now and tried using the smart TV apps for a while, but many were buggy and often had audio/video desync issues. I might blame part of that on the soundbar, but I gave up and got an Apple TV 4K and haven't had any issues at all.