No disrespect to the person, but this seems to be written by someone who has spent their life in academic bubble, without having to deal with people and entities with diverging interests and the impact of time on any decisions. I'm sure many artists will love to spend more time perfecting their art, based on their subjective interests. However, if they prioritize that, without understanding what their customer wants, they will go bankrupt. Nourish your interests through your hobbies. If they align with money making capability, you are one of the lucky few. For a significant majority, they do not align.

How has not honing their craft and churning out generic slop instead as fast as possible worked out for artists?

Everybody can do that now with zero training.

LLMS are the ultimate equalizer. You won't have a future if you can only do average things fast. It's time to become eccentric, and the academic bubble is perfect for that.