I am happy with the Boox; it's a great device (hardware + the reader too) I think and I use it every day. Besides the China nature (which means what user Tho85 already explained here), I am a huge fan of the idea more different eReader types. For a lot of tasks. I often work in bright sunlight and it works really well while my laptops, including the MacBook m1 will give me a headache in 15 minutes glaring against the sun; this is just perfect and powerful enough to be a big screen for another device.
Because of this device I now have the weird hallucination of my perfect device; seems it would be a surface pro x lte (but later gen; it needs to at last get closer to usable software wise) but with a color eInk screen. I know they will never make this but yep, that would be basically my daily driver. The Boox people could come quite far but they focus on eReaders.