When was it ever like that for artists? Most complex music to perform doesn't mean it's the "best", neither is it like that for art.
As an example from visual art, abstract art is sometimes very simple, yet have a profound impact on people, and it was never about being "technical", "complex" or "hard to reproduce".
So, the challenge is still to dig deep and make something interesting and relevant. The hurdles are removed. The gates are wide open. You can make anything. So… what will you actually make?
For centuries. Everything you just said about abstract art encompasses the entire reason it was important and prompted backlash that continues to this day.
I don't think it's possible to judge these questions you present at a glance anyway.