This must be a very new or not universal feature. I have an Element E4AA70R 70" 4K UHD HDR10 Roku TV I picked up in mid-2023 for well below $1000. It has never once been connected to the internet, and it doesn't nag me.
Might still be possible to jailbreak LG TVs. Not sure what the quality of the homebrew TV firmware situation is like though. Maybe not stable enough for family use.