This issue needs to be reframed in order to better deal with it. The root of the problem is being mis-described as boys dating too late. But that is only one (arguable) aspect of what the “shidduch crisis” is.
The “shidduch crisis”, if there’s such a thing, is really just a small part of series of effects that comes from a series of practices in the Yeshivishe community. In a world without these practices, there might be people ending up unmarried, but it wouldn’t be a “shidduch crisis”.
As with any commodity, regulation creates inefficiencies. For starters, in the Shidduch system, 1. All the males are pretty much in one place, or at the very least, in one region; while the women are spread throughout the country 2. The instrumentalities through which men and women can end up together are highly limited; 3. The criteria through which men and women define the subject of their search are limited and poorly chosen both in terms of creating and then defining a meaningful objective; and do not account for anything outside a set of predetermined types.
This creates major problems for women who live anywhere outside the tri-state area. While almost everyone would admit in theory that they would prefer to marry someone with whom they “click” over someone who meets a set of criteria; in the current system, not only to men and women never get a chance to meet each other, but even people who know men, like their friends from yeshiva, their roshei chabura, etc. never meet people who know women, like the principal of a Beis Yaakov in LA. So we’re stuck here with a system that essentially demands representation. But there are lots of people who cannot have meaningful representation – quieter men; people with particular interests and hobbies that the “professional shadchanim” have never heard of; women who have lived in Montreal their whole lives and aren’t particularly beautiful or wealthy.
Focusing on the “age problem”, if there even is one, is not likely to do much except make some people feel good because they got a sign posted on the BMG bulletin board. But in order for something meaningful to change, there must be a systemic change in the makeup of the yeshiva system, in the way that men and women meet, and in the expertise of the people involved in the process.