Or just accept a lot of people like and use these features or are indifferent so you can't avoid it, every company will do it so just never connect your TV to your network.
Gamers Nexus pointed out in BOTH videos that the LG TVs look for open WiFi networks and make use of them. So never letting it connect to "your" WiFi network is nowhere near a solution.
Their second video also featured a lawyer who analyzed LG's literally hundreds pages of TOS which can be changed at any time. The current TOS includes language holding LG blameless - and the TV purchaser legally responsible - for consequences which might be suffered by, say, the children of friends you have visiting your house.
The problem here goes so far beyond a "my tech is spying on me" viewpoint that it's breathtaking. I recommend watching the Gamers Nexus videos, if only to see and hear the slimy, scum-sucking excuses for human beings who represent LG. Creeps like them almost allow me to believe David Icke's reptilian conspiracy theories.