We had books, but then we thought, what about screens.
Then we had screens but we thought, what if screens were more like books.
Then we had book screens and we thought, what if the screens we made to look like books were more like screens.
Sorry but this is a bad take. The active light on "screens" is stimulating, causes eye strain and keeps you awake. The two technologies are not the same.
This again! Kindles have lights, too. On my old Paperwhite, the light could not be turned off. Although it could be dimmed, my iPad's backlight can be adjusted to be much dimmer than the Paperwhite's is capable of.