This is hilarious. They found that young men are having less sex, young women are not having less sex, and some young men are having way more sex. And they conclude the problem is "loneliness". No, dude, the problem is young men are increasingly not worth having sex with.
This of course has precedence in the natural world. Not every male is always having sex. Most often, a smaller number of males that are considered the most desirable sire more children. It's a Darwin thing: you mate with the most successful of your species to carry the best genes and adapt to your environment better to survive longer.
But it doesn't have to be that way. More males could simply become more attractive partners. Or more females could lower their standards (but honestly I think their standards have been low enough... I mean, have you seen my gender, next to its opposite?).
Rather than treat sexual loneliness as some kind of unfortunate but normal condition, let's encourage these people to make themselves more attractive. And by attractive I mean the general concept of desirability, which encompasses the entire spectrum of the human condition, not just the body or some societal trope of gender norms.