Re: I was going to look at a Samsung 50" TV - to buy one today, in fact.
They don't transmit channel information or ACR (at least with my OTA sources) without your explicit permission. The apps also phone home themselves whenever you turn them on (Netflix knows when you watch them) so the only way to avoid that is to just not use their services.
The other metadata is standard device collection shit. Every single one of your internet-connected devices do this, especially your mobile phones which will have far more usable information for hackers to discern than my infrequently-used TV.
And, no, I'm not ok with this. Which is why I pointed out what you can do about it if you so happened to own an LG TV (PiHole everything). The OP's specific question and the 7-year old article response they got begged for more granular information.