Any type of screen brings inherent distraction in a way that a blank sheet of paper does not.
Gone are the days when the limited functioning of computers made it perfect for deep work. Why else would GRRM still use his DOS Machine? His computer is not connected to the internet; it exists and functions solely to produce words. His computer is a true digital notebook. Also, I’m sure it helps him avoid any unwanted hacking.
If it ain’t broke, don’t fix it.
Disconnecting is never easy for most of us nowadays. But if our goal is deep work, consider a blank page. Unless you have a DOS Machine running Wordstar 4.0.