I've bought an LG Smart TV 5 years ago, read t&c where I was supposed to grant them any data they wanted, decided to disagree and kept all network functions disabled. I was ridiculed by my friends for that. At some point, I thought - maybe I'm really crazy to do so? Who am I, a caveman, a luddite? Oh well, I'm not. Not a bad tv though, many HDMI ports!
This. Why would you even connect TV to the network?
It is well known for like 5 years. Smsrt TVs go through your movies library, and upload screenshots and filenames to internet.
Some will start showing ads after firmware upgrade.