You're asking for a 'smart' product that respects your privacy, which generally isn't something that exists for the consumer market. Your easiest option is refu

You're asking for a 'smart' product that respects your privacy, which generally isn't something that exists for the consumer market. Your easiest option is refusing to give your TV an Internet connection and doing things your own way instead (input from a computer or other small device you can actually control easily). If that's not an option then you can mess around with firewalls or VLANs and so on for it, but it's still quite a bit of effort.