Smart TV software can and will interfere with regular operations. My girlfriend's dad got a shiny new Smart TV for Christmas a few years back. He also lives in the sticks and has satellite internet that works maybe every other day.

I volunteered to set it up, and what do you know -- the "OS" was gated by a registration / sign in screen. So, no way to access core functionality (including external inputs, settings menu, etc.) without an internet connection. Even if there was some strange ritual that would let me get through (there wasn't), the average user is fucked.