My TV's getting on a decade old. It's getting bad burn in around the corners. It's time is coming, and I'm prepared to replace it. In an ideal world I'd get a 4K HDR TV with OLED. Is it possible to get a high quality TV that doesn't have smart features? They're completely redundant for me so I'd hope that I could save money that way.
I had to plug an Ethernet cable into my vizio TV and soundbar to stop them from broadcasting an open WiFi network constantly. You may also be able to "skip" accepting the EULA when you first turn the TV on, but I don't trust them to not spy on me.
I put my TV in a separate VLAN on my network to stop it from being able to phone home or talk to the rest of my network. I don't know what kind of router you have, but many can allow you to block certain ports to stop the spying too.