The keyboard example is telling because that's basically what a bunch of our favorite musicians now do. The drum track for that song you're listening to? That's a piece of software not drums.
(Here's a musician's take on it: https://youtu.be/BDJF4lR3_eg?si=kKJVF2hqSd-TOEzX)
"Being able to express your imagination more clearly" is fine for what it is but that's not how people use it. His point about the least talented kinds of people using it to pretend to art is dead accurate. People think it's snobbishness about art being this superior untouchable thing, and that is absolutely not it. You see the same thing with people going on about how SWEs will be obsolete, too, because something something code generation.
Making anything worthwhile involves thinking and choices and experience, and that sort of person consider that too hard and boring and just want something that looks worthwhile.
I think we're going to come into contact with brilliant projects that people have spent years making and there would just be no way they could've done them without AI. It will be a human thinking it through making thousands of choices just like the OP said about Jurassic Park. You can and basically have to guide the AI like crazy to get any output worthwhile.
Are those hours completely without value, because I used genAI during most of them? It involved a LOT of consideration and a few pretty tough choices. But because I didn't do my 10.000 hours, and it's sad for those that did, I'm not allowed to create this way?
Whatever, I'm still putting it on my wall. It means more to me than most "legit" art does.