Now, as John Ekdahl noted on twitter, the cost of doing so might have exceeded the benefit. When you court only a single segment of the electorate so maniacally, other segments of the electorate might get the idea that you’re not for them. (This is something I bring up a lot in the context of the GOP excessively narrowcasting to highly specific and limited cultural cohorts.)
But the Democrats actually did succeed in their primary goal of scaring the bejeesus out of hysterical single women.
It could be that their message merely needs tweaking — perhaps they just have to be less overtly, obnoxiously single-issue/single-constituency in the future. Or perhaps they just need to dog whistle these appeals to Single Ladies, rather than being so crudely, stupidly explicit about them.