Not sure if OP actually read the article but the title of it is clickbait. The author of the article is not trying to actually say that the single problem of society is single-parent families or anything like that. The article mostly goes into how conservatives will present some pretty banal data but then sneak in some normative assumptions of how things should work to make a conservative conclusion. This author is illustrating this point by specifically using a book about the data of single parent homes that makes the conclusion that we need more two parent households.
Imo was a pretty good read and probably one I'd show to someone who's a moderate or a fence sitter, but it was nothing new to me. The author pretty cleanly lays out several of the tricks conservatives like to use to make it seem like their batshit crazy and bigoted ideas aren't actually batshit crazy and bigoted.