It's not a question of defending a corporation, it's that publishing a video that mixes true facts with facts that are not quite right weakens your argument and makes it easier for the corporation to control the narrative by pointing anything that's disingenuous.

And to be clear, I'm not defending LG here. Their terms and conditions are terrible, 'We know who's in the LG household… we own the glass' is not something that should be said by any appliance company and shows a clear lack of ethics. But if someone is going to make a video explaining what's happening it's better to stick to what LG is actually doing instead of listing potential issues without making it clear.

A rooted tv by definition has less security, if you show that you can record because you have full control over the device that only shows that there's no hardware block for the mic (which most devices in existence don't have, apple, Framework, pinephones are the exception there). It's not in anyway different from most phones and devices that people use in daily life.