I don't think it is all Samsung "smart" TVs
Well, I just connected our caravan TV set to WiFi for the first time (partly because the manual didn't say there was WiFi built in).
Checked out the very slow web browser using wireless keyboard and mouse. Chrome browser said it was out of date so I did a manual update of the TV software.
It is working fine, Chrome doesn't complain any more, and I can watch catch up TV on iPlayer.
There is no (obvious) camera although one of the USB ports says "camera" so I doubt that anyone is storing up spy videos of me lying in bed.
So I am not covinced that the world will end because I occasionally connect my TV to the Internet.
I do note that for a full HD TV with a modern processor and OS it performs very badly compared to my two Android tablets.