(a continuation of yesterday's post)
Vexillology is the c. elegans of aesthetics - the simplest model organism that lets us observe dynamics of interest. I haven't read enough MFA books to do more than relay the thoughts of my betters, and you probably haven't either. But anyone can have opinions on flags.
If you're like me, you learned the following code of good flags:
Every so often, a US state will decide that its flag is politically incorrect and sponsor a contest to design a new one. Then online vexillologists will go over the entries, savaging any that violate the code. "Look how busy this one is! It has four different colors!" "Oh god, this one literally included text! Can you believe it!" They'll moan and scowl and ask why everyone can't be more like Indonesia. Good old Indonesia, they know how to follow the rules:
https://www.astralcodexten.com/p/three-model-organisms-for-taste