Furthermore, if its using 5G then its not tied to the IP address that my other traffic comes from and so they can't use the TV to target me with ads online either. (Provided I don't use any of the same accounts on both the TV and my other devices.)
And, that's before you consider that they can also scan local wifi and bluetooth spectra to glean even more information about their local environments. With participation of vendor applications on phones, they could also use ultrasonics or crazier things like modulated LED lighting.
Finally, if one of those devices is compromised, it can then be used to launch local attacks via wifi and bluetooth, or even potentially those other covert channels if they can exploit sloppy code in those other dark apps...
Taking those things into account as well as the things paulmd pointed out in a sibling comment, I am no longer fine with the idea of 5G in my TV.
https://www.pindrop.com/blog/silently-tracking-users-with-ul...
https://www.theatlantic.com/technology/archive/2015/11/your-...
https://thehackernews.com/2017/05/ultrasonic-tracking-signal...
Also, virtually any device with cell connectivity includes a GPS on the same chipset so it's pretty trivial to connect that with google location data. So if it has 5G it has your location it has your identity.
Not on your LAN but still harvesting your usage data (a feature!), and still hackable (smile for the camera!).
I don't know of any TVs that come with a camera built into them, and if there are any I certainly wouldn't buy one of those.