People need to know that single parents suck, and then child abuse will magically stop.
Or something. We live in a culture that feels like the only way to solve any problem is to shame and punish the nearest person to the Bad Thing. Even if that doesn’t solve the problem – even if it exacerbates the problem – it makes everyone else feel better.
Also, it would have been nice for Time (at the link) to actually check up on that “single parents are 20 times more likely to abuse their children” statistic the Republican says. This is how stupidity like this gets perpetuated.