> The thing with art and music is that they are easy to appreciate

I get what you mean (and agree w.r.t. math/code) but notably, I think appreciation for a lot of things still accumulates if you put in the work.

As an amateur violist, I can attest that I gained a totally new appreciation for most of the pieces I've studied and played in an orchestra in the past.

This not only includes "unknown" classical music from different eras, but also the obvious (popular) candidates like Beethoven's 6th, Dvořak's 9th and Grieg's "Peer Gynt" suites.

And there's a lot of great music one needs to get into first; for expample: I love Tool songs exactly for that, and there are certainly more obscure artists :)

So, I suspect the thing about maths and code is mainly just caused by the fact that people can go through life just fine without really interacting with them on the level required to develop the smallest bit of "taste" (as opposed to e.g. music).

And to think that all this knowledge comes from a small subset of music, specifically rooted in European classical music. Music worldwide even uses different scales.