ubiquitin, in his/her paragraph 3, hit on exactly why there is no point to this serious discussion: absence of any statistical evidence that there is a “crisis.” Population growth in the frum community has been strong since 1945, and the rate of out-of-wedlock births in the frum community is extremely low. So where’s the shidduch crisis? I think some parents and some young adults have their own timetables for marriage, and if the shidduch choo-choo train does not arrive when these disparate timetables say they should, the makers of the timetables assume there is a “crisis.”
If this is a serious thread, future responders should have sound data, and sources (not like me).