There's already a Hisense A9 Pro for e-ink phones. $500 and Android 11 are two huge turn-offs though. Trustability is also up there.
This phone looks a bit boxy but overall dimensions seem maybe a bit shorter than most? I keep thinking of the reading experience; when I read on my phone, I turn off the bottom 1/2 of my screen, since I don't need my eyes to be looking down as much. I keep thinking it'd be very neat to have a very small screen device that still has good e-reading. But you'd likely need a companion device for navigation, if you need to jump around or take notes.