I don't quite understand what you're getting at with this comment? In metal and punk it's pretty cornerstone of the genre to be authentic, and in metal to value human skills (all the solo parts, fast playing). I've played and listened punk and metal my whole life, but will also enjoy early Lady Gaga, Eminem, Kendrick etc. celebrities because I recognize their authenticity and skills. Sabrina Carpenter and Drake go over my head because of blatant ghost writing and even though they have good tunes, I vomit retrospectively.
So what is AI bringing to the fans of these genres that the fans might value? Because it's not authenticity nor is it skills. What is the point you're trying to make?
I am saying on surface it might seem they should be the staunchest opponents and as I said the culture is "only cassette tape is real otherwise fuck off and die" but simultaneously its also one of the least image/player focused genres in some ways, what is being played is of much higher priority than who in specific is playing it.