This has never been proven in any way. It would be really easy to show that a smart TV will automatically connect to an open WiFi connection and send data, but nobody has done it.

Why do many when few

Well, bash.org is gone, so…

Why not just buy a TV and not connect it to the internet?

A rattlesnake can certainly communicate using sound, but is that language? Bright colors can communicate ideas of “do not eat this” across species as well, but they wouldn’t fit my mental model of a language.