I just purchased a new Samsung TV. it required an Internet connection when I first set it up, but once I got through that initial data dump / update, I reset the network configuration and turned it back into a dumb(er) TV.
I use a piholed Roku 4k for my main streaming device. I will admit it is also trying its damnedest to track what I consume and serve ads to me too, but what am I going to do? Read a book?