I'm with Fitz, sort of.
The academics think this stuff up. Mental exercise, conjecture, blah, blah, blah. It's not real to them, it's acedemic.
The problem stems from people who can't think that way and apply something that cannot (or should not) be applied.
It's pretty much the larger picture of all the social justice BS going on right now. Yes, there is such thing as being socially privileged and social disenfranchised based on things an induvidial has no control over.
There is also no way for an individual or a group to gain control. The overall idea is way too abstract actually do much about it.
The only application is to be aware of it and do what you can actually do. The lesson to be taken from this study is to encourage good child rearing habits among the disenfranchised, not take away from the privileged.
But from a SJW perspective, that's just not *fair*, thus the BS.