So I resorted to use it with Apple TV only (its great that Apple TV also has Dolby Vision support, so DV content looks stunning on this display).
I thought I was smart in not connecting the TV to the internets. Once I did connect it for a few days, later at some point Vizio forced me to connect it because, they changed the physical remote, sent it to me for free, and then the UI was blocked until I setup the new remote, which needed internet. For a moment, I thought of returning the TV to Costco saying "it is not working". But I didn't have the patience to do that :-/
So technically, Vizio or any smart TV can prevent you from using the TV after you start using it, if you refuse to update the firmware, remote etc.
I'm willing to pay 2x the price I paid for Vizio, if Apple comes out with a display, because thats the only brand I trust for privacy. But only problem in that case, will be HDMI ports. I doubt an Apple Display would have more than 1 or 2 HDMI ports (looking at how they are port unfriendly on Macbooks :)