For the tech-savvy, I'm not too worried about smart TVs. I just do this: > If you want premium image quality or sound, you’re better off using a smart TV offline. In the future, if they add e-sims, we'll just remove them or de-solder or whatever. The real risk is cars: if they start not working without cell network connections.
I let my latest LG TV on the network, but block internet access at the router. HomeKit integration (Siri turn off tv), Chromecast, Airplay, and other local services all work, without the ability for it to phone home.