apushutayid:
In a nutshell, the way this new program helps towards closing the age gap is as follows. By encoraging shadchanim to focus on older girls (as younger girls are not eligible to participate in this new program) with a greater financial incentive, the shadchanim will be focusing more on the older, higher paying, girls in the program at the expense of focusing less on the younger girls who aren’t eligible to join.
Thus, through these redirected focus and efforts of the shadchanim, more shidduchim will be produced among the older girls and less among the younger girls. So, inevitably, this will cause girls (on average) to get married at an older age than currently.
(Unfortunately older girls who aren’t participating in the program will also get less attention and shidduchim.)