https://www.flickr.com/photos/7474079@N02/
Boring isn't it? (Interesting as history maybe?)
The "what is worth expressing" is where creativity happens. Technique makes you a competent hack. It's not enough for originality. So it's misleading to think it's all art. Technique and originality are different skills. The best artists have lots of both, but they're not related skills.
(Software has the same problem.)