I rooted my LG C1 and honestly I can't go back to an unrooted TV. Game streaming works so much better(I can actually install the apps). I can control everything so Home Assistant automations are much better. Internet is blocked so no nagging or ads, But they are turn off via root just in case.
Now I have a weekend project in the future, assuming I can find a compatible process for my hardware. Never connected to the network, but the thing makes a few ever annoying popups I would love to disable. Or at least ensure that no "helpful" guest fills in the wifi information when I am not looking.