LLMs are trained on the past.

They can reproduce things that were novel and high taste from the past, but not the current frontier.

Taste constantly evolves, to allow people with taste to differentiate themselves from the people going with the new status quo.

Everyone is constantly seeking an edge; some people's variance turns out to be good, and then others follow along, and over time it becomes the new status quo.

If you bring everyone up to the average, you need someone with the discernment to see the edge.