Nowadays the hip devices for eink nerds seem to be the Hisense range, which are no longer supported by the manufacturer, and you need to root them, and install your own ROM, just to get a recent Android. It's hopeless.
All that said, recently I've been tempted to try again by picking up the cheapy Inkpalm device, which is stuck on Android 8 but it's cheap enough that perhaps the antiquity won't annoy me?
I don't understand why eink has never taken off. I just want a small, cheap, light device that I can use to read novels - sure - but also mostly-text online content like HN, newspapers, blogs and email newsletters. Hey, let's do my Anki flash cards on it at the same time. I spend at least a couple hours doing all that stuff every single day and surely doing it on eink would be better for my eyesight than a phone screen. Much better battery usage too. I can't be the only one?