Your Smart TV is already doing this to sell targeted adverts aimed at you based on what you watch.
Sceptre makes consumer 4K "dumb" TVs upto 75". Walmart sells them.
I remember reddit being stumped by this question years ago.
Their TV-sized screens are filed under "large format display".
They're 4K, pretty large and the price was surprisingly low for a screen this large and of this quality.
I prefer to support the market for "dumb" TVs.
Also, if you purchase a "smart" TV, then you either have to open it up and remove the WiFi card (and deal with any anoying messages), or hope no guest ever connects it to anything.