Another argument I keep hearing (most recently from pg), is that we'll always need non-AI training data. That, too, doesn't follow. Training new models on synthetic data does not mean we get stuck in a particular mode or style. We'll continue moving, improving, and trying wildly new things. Bootstrapping with synthetic data doesn't block evolution - it enables faster evolution, even. (I'm using synthetic data to train new models to great effect.)
People are angry that we've lowered the opportunity cost barriers and so they're expressing their frustration.
It's a good thing that life's choices no longer fence us in as much. Everyone should get a chance to learn how to express themselves through art with the new regime of tools. Despite changing economics, there will still be a top 1% that do better than the rest of us.