Could you just do a computer monitor? They have an HDMI port so they will show anything you want. Downsides: no tuner. Not a problem if you don’t need one. No remote control. Maybe not much of a downside if you’re just watching using a streaming box. No sound. Not a problem if using a sound bar.
Seems a worthy idea if you’re concerned about tracking, but I don’t see this idea around so I must be missing a downside.