The bad idea is that by rooting, you can (of course) turn your device into a 24/7 surveillance device that sends voice and video data everywhere.
That does not mean that LG does all that by default.
You're just jumping around a single point about rooting, whereas the video shows it's logging all the devices, with their ip, name, even detecting someone being in a Teams call. And you are as with the article, trying to sidetrack all of it by focusing on rooting.
Because of course it does. You are fighting the wrong side, they should proof they are good, not you defend them.
Yeah, it is insane a fully open source firmware with reproducible builds is not a minimum standard for something as sensitive as a modern smart TV.
It is not the minimum standard for computers.
Why should it be for TVs?