Some Samsung TVs already try and connect to open WiFi networks if you don't connect them yourself.
see https://www.reddit.com/r/privacy/comments/bpr6xs/if_you_choo...
My next idea - Faraday cages for smart TVs
see https://www.reddit.com/r/privacy/comments/bpr6xs/if_you_choo...
My next idea - Faraday cages for smart TVs
(I disconnected the antenna on my OnStar, yet found it still connecting to cell towers successfully from time to time. The resister solved that.)