Yes, this precisely. Smart TVs of all flavors as well as Roku boxes voraciously mine your viewing habits, connected devices, network layout, mic input, and practically anything else they can get their dirty little hands on. They’re usually running out of date OSes and are full of holes to boot, making you a potential vector for smart device botnets.

Smart TVs and Roku boxes simply cannot be trusted. I have a brand new, relatively expensive Sony smart TV and while its Android TV support is more than adequate I don’t use it at all and keep it off the internet at all times. Instead, I use an Apple TV 4K.