This. I've had this happen with relatives who come to visit. It's unkind to tell them "Don't fuck with the TV" or "Ignore the TV if it tells you it wants to connect to something."

They want to be "helpful" and show me they can "work tech" by doing stuff like this. They don't understand that the TV is manipulating them. I don't want to have to explain to them that I'm basically a neurosurgeon and they just tried to impress me by drilling a hole in somebody's head. Because the TV told them to.

Disconnecting the wifi avoids the need for unpleasant conversations.