@Tanuki there's barely even eReaders yet, I doubt there's much of a market for a single-purpose device considering the price of color eInk panels
@Tanuki the technology can do shading already but I assume the driver for that would be a lot more expensive so they didn't go for that
@Tanuki yeah though text rendering won't look super smooth like on a grayscale calendar, for instance. Mine's showing a Home Assistant dashboard