It's prose, it's not a technical manual. There's no "ELI5" for art, because art happens inside you. For example, "Wave" (1889) by Ivan Aivazovsky[1] is a painting I really like. It speaks to me, but how do you "ELI5" it? There's nothing to "explain" about art, unless you only dissect art into the technical details of the painting -- because you look at it, and either you like it or you don't. If you don't like it, that's not from a lack of "understanding" the painting, there's not a bridge of knowledge you need to cross, you are entitled to simply not like it and that's fine. The fact that I do, and maybe you don't, doesn't really say anything about whether it's a good piece of art or not, or whether you understand art, etc.

[1]: https://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/%D...