> I came to think, maybe we should create a digital typewriter giving us the best of the two worlds.
What the author calls a "digital typewriter" is what originally used to be known as a "word processor" -- a standalone, dedicated digital device with a keyboard and a (typically small, typically monochrome) display, running built-in software for editing text: https://en.wikipedia.org/wiki/Word_processor_(electronic_dev...
You would type on the keyboard and your words would appear on the display, where you could go back and edit typos and such if you needed to. The display usually only showed a few lines of text, but you could scroll up and down through the entire document using the screen as a buffer. Your work would be then persisted to some storage medium, often in later models a floppy disk. It wasn't WYSIWYG, but it was a vast advance over mechanical typewriters, for all the reasons the article mentions.
These devices had their heyday from the '60s through the '80s. They were eventually rendered obsolete by the arrival of the inexpensive general-purpose personal computer. All the functions of the word processor could be provided on the PC via software, and the PC's bigger, more colorful display made it a better environment for doing those things anyway. The programs people used to do word processing on PCs came to be known as "word processors" themselves. Eventually the dedicated devices stopped being made, and I guess over time people just forgot that there was once a word processor that wasn't software.
My mother was a writer, and I have many childhood memories of her sitting at her treasured Brother word processor. So perhaps I have more reason to remember the hardware word processor than most people do.