By every metric, children raised by single parents are worse off than kids in a 2 parent home. That's bad for society and economy because those kids won't grow up to be smart and educated
Why would any govt want dumber kids that cant contribute to society, especially a country that needs them like Japan ?
Because a breakdown puts more money in the pockets of the few and is a way to limit minority populations that might challenge the established powers. Legislatively, the US has been at war with the family unit since the civil Rights movement for anyone below upper middle class. Family values are preached at the right to get their vote. The tax code, dwindling support for education, and treatment of healthcare tells you the family advocation is merely a tool to get votes. They know they have created enough of a supremacist culture that those voters will go for it just because other racial groups have a different general opinion or merely because it benefits other races.
So yes, logic and statistics would back a more educated public, but this will only be allowed the extent that it makes The established more wealthy and in control. Enough that it allows enough new members to keep the economy going. Notice how when things get to good for someone not in that group, the bubble talk starts. Contraction talk starts. These are investments being protected in the name of protecting the greater economy. A very Keynesian approach for people that claim to be the opposite. So again, preaching free market to the populace but doing what it takes to protect themselves. The racist element keeps those who should question this at bay. If blacks want it, it are talking advantage of it, then it must be bad.
Long winded way to say, they want enough educated, "good" citizens to keep the economy flowing to the point that it maintains their advantage. This is why they clamor for a Donald Trump. It should be a telling lesson for anyone wanting to understand what the power structure wants the US to be.