That's part of what this article gives you, why it's talking about art school and not technology. Miscommunication - incommensurability of how to see the world really - is the pitfall when engineers are tasked with creating a subjective thing and asked to try to do something simultaneously functional, familiar and original.
Just put yourself in this guys shoes. Just like you are excited to share Linux display color control commands, this guy is excited to share a new way of thinking about black and dark shades that instantly expands your vocabulary - both for creating new things and understanding the decisions of others.
Anyway, the negativity of others in this thread, it's ironic because that's exactly the point of the article, really, that the pedantry gets in the way of being creative - or at the very least, seeing things originally.
I work with an artist daily. I appreciate and value his opinions that there should be no pure black in the creative product we make together. It elevates what we make above all our competitors. It's an extremely insightful perspective.