personal) I'm colorblind and it really messed with my ability to guess at the appropriate colors, and sometimes made it impossible to read text on the screen. (Red on black is hard for me)
science) One of their more prominent articles showcases a study of how reading on a stock iPad can mess up your sleep a lot, but reading a book with standard bulb (much warmer than the iPad backlight) has a much smaller effect. I remember studying the effect of light in neuroscience classes in college, and blue light is potent, but so is total light received. Indirect light from bulb, or having a device blast light directly into your retina. Never stood a chance. Just shifting the colors can only reduce so much light. For example, max out the brightness on any non oled based screen with a completely black image. You still see light even though those gates have done the best they can. My general impression of the reporting is "lets throw a bunch of science at you, which doesn't quite say what we do, and hope you jump to our conclusions."