I've got a 65" LG C2 OLED TV (from 2022) that I hacked with https://rootmy.tv shortly after I purchased it (and before LG updated the firmware to prevent the hack).

It seems pretty safe. When it's on, I can ssh into it. When it's off, it doesn't reply to ICMP pings, and doesn't appear to be using much power.

I guess the newer LG TVs have gone to shit.