I’d encourage you to look at XTEINK. They kind of started this “baby e-reader” trend and the bonus with their stuff is there’s custom firmware available that makes it SO MUCH easier to use.

Boox has been pretty not-transparent on their intention to support custom firmware and……… I’ve used some of their android based devices. They’re nice, but their attempt at “simple” for an e-ink display leaves a lot to be desired.