I’m finding it odd that we’re trying to extrapolate and imagine what the Roshei Yeshiva are thinking. A little disrespectful, no? And definitely a pointless exercise.
What does seem clear (to most of us) is that the Roshei Yeshiva are, in fact, not fully supportive of, and not implementing any major changes in line with, the age gap theory.
And, while West Gate (and many others) would like to blame the parents for every problem from unmarried singles to global warming (come to think of it, he could probably make a solid argument that ISIS arose out of horrendously misguided parenting), there is no doubt that the opinion of the Roshei Yeshiva is an important factor in the decisions of the young men learning in Yeshiva. And that’s the demographic a lot (most?) of the unmarried ladies in question are trying to reach.
I’m agreeing with squeak that the grounds here are very shaky. And suggesting again that R’ Rechnitz round up some smart people with the experience and knowledge necessary to do some solid research. We need to get onto more solid ground to solve this problem.