Reminds me of the (trite?) conservative talk points that if you 1. finish high school 2. don't have children outside of marriage 3. hold down a job, then you should more or less have a successful middle class existence.
What's wrong with that? I think that's a fine way to plan one's life. It's over simplifying some things. Not all high school educations are equally valuable, for one thing, which then also relates to point 3.
The mother's side of my Cane River creole ex-girlfriend's family had values like this. I knew some very graceful people of African American descent who also had values like that. In my experience, it's such values, however they come about, which are the causal origin.
I find your apparent preconceived notions on who gets to hold which ideas disturbing. Ideas are ideas, not flags or arm-bands.