A human being doesn't violate copyright in learning from a copyrighted work, including when that human being is later more able to produce other works based on

A human being doesn't violate copyright in learning from a copyrighted work, including when that human being is later more able to produce other works based on that learning (e.g. reading fantasy novels and learning concepts, tropes, or vocabulary that one uses to produce other fantasy novels; Yes, but a human being isn't allowed to copy that work before learning from it, even if they destroy the copy afterward. AIs don't watch Youtube or browse Github. People download copies of content stored there, analyze and categorize it, and then feed it into AIs. Copyright is broken at step 1.