If the age gap is the true cause of the shidduch “catastrophe” as Rechnitz and others say, it means that the boys have no crisis at all and are generally all getting married while the catastrophe is essentially on the girls side.
Which also means more shadchanim including professionals as well as personal initiatives by private non-professionals such as by most of us here, will essentially not help the catastrophe as the boys are getting married while the girls who aren’t is because there aren’t boys left for them to marry.
And it means that any other suggestion, more singles get-togethers, more realistic mothers and/or boys, less narishkeit, etc. will not do much good either.