I've never plugged any TV into a network, except as absolutely necessary for application development (my company used to do those). I fear this might no longer

I've never plugged any TV into a network, except as absolutely necessary for application development (my company used to do those). I fear this might no longer be enough in some possible future - if enough people don't connect their TVs, I could imagine manufacturers equipping the TVs with always-on LTE/5G modems. (You don't need airplane mode if you can't realistically use it on an airplane anyway.)