When you* write YA people tell you a lot of rules you’re supposed to follow. For example, “never introduce a lot of named characters in the first few pages.” I tested that premise by checking out a bunch of my very favorite YA books. Guess what!** The number of named characters in the first 3 pages varied from 3-8.
So I believe ‘rules’ should be called ‘guidelines,’ except when the books you love don’t follow them, in which case you shouldn’t call them anything.
**I know you already guessed. Play along with me.