[gree303]

I do own a Samsung 4k/hdr smart TV. There is a hidden menu, in this menu you will find an option to disable the smart option.

I had to digg deep to find it. You can search for the remote-control codes which grants access to the hidden menu (brand/product related).

One negative thing, when I start the screen I have to exit a message stating how dumb the TV is.

Have fun with your dumb TV :) I love my dumb TV screen, just like any other PC screen.

Update: This way you can go back to smart TV anytime, in case you wanna sell it. No need to flash the firmware.