What explains the waning influence of research blaming black poverty on black culture

Vox has an article purporting to explore “The real reason research blaming black poverty on black culture has fallen out of favor”.  And it’s fine so far as it goes, but it still dances around the reality.

Why has “blaming black poverty on black culture has fallen out of favor”? Because the same dire straits and dead-end traits show up among the non-college-educated White population: increased parental absenteeism, increased substance abuse, socioeconomic lock. Since it would obviously be crazy to deduce that these problems are intrinsic to White culture, it’s no longer fashionable to assign a genetic driver to them. In reality of course, the actual lesson is: Take away good-paying jobs and educational opportunity, and — shocker! — families and communities feel stressed, leading to more disorder.

http://www.vox.com/2015/3/26/8253495/moynihan-report-liberal-backlash