How many "musicians" can play through even a basic song like Transilvanian Hunger, a dirt simple 3-4 chord song? There comes a point when people let their anti AI psychosis get to the point when they start stating obviously and absurdly insane stuff, like how a music generation app that makes decent quality music is "not music" or worse than atrocious crap most learners and amateur musicians vomit out.
You miss the point so entirely that I'm not sure you opened your eyes when reading the post. A 7 year-old excitedly honking on their recorder is better at making music than the AI-generated shit getting made.
Technical ability does not define if music is 'better' or not. Art is a conversation between the artist and the audience. If there's no artist there, there's no conversation, and there's no art.