Ask HN: Are there any 4K “dumb” televisions?
All TV's are dumb tv's if you only use them as an external display/monitor and don't connect them to the net. I have a dedicated computer for a media center and just use HDMI1 input on the TV. Never enter menus. Never update the OS. Never agree to anything. Never let the TV "phone home." Never set up wifi. Never connect a CAT5 to it. Set the input using the remote and forget it. Treat it as a dumb monitor. Computer is connected to the net, TV is not and has no way to access it.