RTFA
The article doesn't adequately address this actually.
The interviewer asked "Does disconnecting a TV from the internet prevent all these forms of data transmission?". Obviously if the TV is completely disconnected from any internet connection then it can't transmit the data, but that would require removing the wifi radio itself.
Disconnecting the TV from your home wifi still means they can try to connect to any other public wifi. Samsung were the only ones who explicitly addressed that in their answer: "Samsung TVs do not connect to open Wi-Fi networks on their own."
I honestly don't care enough to wade through it.
It's just usually with Smart TV articles, someone takes a break from their Black Helicopters Tracking app to show up and repeat it.
Or even: Paste the article in any AI and ask it
Always good advice, but to answer their question, only Samsung mentioned that their TVs do not connect to open wifi networks on their own, and the question specifically was not asked.