Which doesnt work. LG tvs will scan for availible networks. Someone setting up a new router within range briefly disables encryption and "your" tv will jump on that network and transmit all the stored data.

It is tinfoil hats time, at least for LG tvs.

I guess you could remove the wifi antenna, or otherwise brick the wifi reception ability (faraday cage, lead block, etc). Or - just boycott LG. I'll never buy any of that corporate espionage nonsense, ever.

Also: the US intelligence agencies used Echelon ages ago to monitor what vast swaths of innocent people were up to. I think it's sensible to presume they've got their hooks into these devices too.

Give it a network, but don't allow that network to access the internet.

If it can't phone home, it's not connected.

A technical solution would presumably spoof the spaff but with E2EE and DoH is it possible? So then what, hacking firmware? I guess then TVs get a hard lifespan limit.