I recognize that too, that a writer cannot dictate what is class and what isn't.
It's one of those things that people just generally acknowledge about a person.
I never saw the link before yesterday, but I saw a lot of good guide posts in there...kind of like a checklist. But it's true, living a good life comes more through habit and experience, not by someone else's list.
I also didn't realize this link was targeted toward youth. It is a good piece for character education or something like that. Just to let people be aware at an early age.