Am I the only fucking rational person here

No, no I don’t think so

Which he literally answers in the comment you questioned him on. You asked him something after he explained what you then asked.

That’s braindead, and not because I “disagree” with your question, whatever that means.

The sentence they wrote right before your quoted sentence answers your braindead question.

Idk that feels like saying that as soon as you sell the skills you learned on YouTube, you should have to start paying the people you learned from, since you’re “using” their copyrighted material to turn profit.

I don’t agree whatsoever that copyright extends to inspiration of other artists/data models. Unless they recreate what you’ve made in a sufficiently similar manor, they haven’t copied you.