Kind of cool, but the conclusion was completely backwards. The final line of the study was "So he is our collective responsibility. They all are.", but the entire study was about how the home environment affects your outcomes. I guess their conclusion is that if an individual does a bad job raising their kids, it is societies fault.
But home environments exist in a specific social context that effect how people think they should foster a good home environment. We've lost a lot of societal knowledge and experience around good family structures since probably the 60s. As a society we have definitely encouraged, especially the lower income bands, to outsource it to schools and institutions. That is going to have an effect.