I would love to update my 10 year old 1080p Philips non-smart TV to a 55" or so 4K HDR screen but I don't want any of the smart features. Does anyone know of any manufacturers selling high end "dumb" TVs? For now I'm comfortable using my appleTV but I like the fact that I can disconnect it at any time. I want a TV that will simply display whatever signal it receives without any connectivity required.
What you're looking for is a monitor.
It doesn't end there; while I was looking for a monitor I found several models running Android! One can not be too careful these days.
That said, it is still possible to get a Dumb TV, say up to 55'. Larger devices are almost exclusively ~~spies~~ smart.