The men unable to get a date at all clearly have some work to do - even when there's so many unhappy women, there is something they're still doing or not doing that makes them even less appealing.
The unhappy women and the men they're currently dating are a more curious situation. Are the men unsatisfied with them in particular, and so these women have work to do to convince a man they're "marriage material"? Or are the men simply not looking for anything that serious at all?
The general position of the media coverage is that it's the latter: the women can't "make themselves good enough for marriage" because the men just want the casual merry-go-round to continue. And there are certainly men quoted in articles about this who feel exactly that, but I can't say for certain that we're missing another group who just finds these women lacking.
My personal view is that we've shifted a bit, so the "growing up" that would've normally happened for these men in their early 20s is now ten years behind or so, but I see it happening in my cohort now as everyone is in their mid-30s. So I'm not too concerned for that side of things.