I see here a another problem too. Most of us, or at last me for sure, have our Shader knowledge from BB  SG, and a few others.

I collect shaders, Tutorials from BB where ever I see them. I study them,try to rebuild them,  and when I understand how they work, I use the basics for my own stuff. Modified for sure, but the basic is not my work. How can I put here a copyright? This would be the same if somebody would use one of my OBJ files, modified it and put a copyright on it.

I agree that collect shaders together and sell them after almost 1:1 is shameless, but when you use shaders for your product, which was in the Public domain and you modify it for your own need, or you learn it hard from tutorials by your own, there is nothing morally wrong.

La vie est éternelle. L'amour est immortel.

“Dwell on the beauty of life. Watch the stars, and see yourself running with them.”
― Marcus Aurelius,