So I have a tv of LG from the same period. I keep it dumb, not connected to the internet and just use an apple TV, so far it's a clean option. And it's always a good idea to have piHole up to, they usually have the block list updated with LG's and Samsungs urls.
Fun fact: some (most?) Samsung TVs of the last ~6 years can't complete OOB setup if they're connected to a PiHoled network with the most vanilla PiHole filters
The Gamers Nexus video explained that they will connect to nearby open SSID’s to send the data they have collected. So just not connecting it to your network may not be enough.