> but it's verboten to even mention

You just did.

I find it curious, though, that a number of commenters seem to focus almost entirely on the "present" aspect and not on the crucial emotional investment aspect discussed in the article: "when fathers are present and emotionally invested in children’s lives", the title of which says "what boys really need is emotional support from their dads".

Presence alone is not necessarily helpful, and indeed can be harmful, as demonstrated by countless abusive parents. On the other hand, an emotionally invested parent can make a positive impact regardless of whether they're married.