https://aftermath.site/xteink-x4-cheap-hackable-ereader-cros...
These things are teeny-tiny.
I comfortably fit around half a page of a real paperback book on the screen. Its not the biggest compromise ever and for the size its great.
You know how they say "the best camera is the one you have with you" well the same goes for an ereader. I do have my bigger e-reader but it doesn't fit in my pocket, it fits in my bag and that's believe it or not a big difference.
I also have a more expensive "phone sized" ereader, and its fine. The size is really good and I've read many books in it. The issue is that it feels like carrying two phones, its the size and weight of a modern phone. The X4 is like 80gr. Its significantly smaller.
Well because people like it better!
(I do have a kobo, it's too big.)