Source: I was the chief hardware engineer for this device.

The problem with eink tablets is that they must use front light, and not backlight due to how eink works. This means there is an extra layer in front of the layer where the pixels are, which causes parallax effects which makes writing feel fake. This is (likely) why remarkable deleted the frontlight from their product.

Whereas with the daylight tablet, we have a trans reflective display and a backlight. Since the backlight layer is behind the layer where the pixels are, the parallax does not suffer.

I find the experience of writing with a Wacom EMR pen on mine very pleasing :)