People will complain about copyright precisely until they have some creative work of theirs sold by someone else. Professional authors cannot exist without copyright.
I complain about copyright precisely because I cannot even show my creative work. And if I'll try to upload it anywhere where people are then I will be stripped off any of my "rights" in that very moment. So how copyright helps in that case?
Your problem wasn't an issue with copyright but with YouTube's approach to handling copyright.