Dr. Pepper:
With all due respect, yeshiva guys at 22 are no more mature than they were at 19 (they have not had any experiences that would teach them responsibility, etc.), and no more ready to support a family than they were at 19.
I’m not disagreeing with you that many are immature, bit that is just as true at 22 as well. At least at 19 many have not picked up Yeshiva dorm habits!
(personally, I think 19 has to come along with BC until they are ready, but I don’t think the roshei yeshiva would go for it (which I can’t understand at all! They would rather the boy wait to get married? That makes the issue worse.))
Finally, we are already in a “divorce crisis”. If the couple had no choice other than to be “protected” under their parents wing (as being younger), they could figure a way to work it out (assuming they are normal and CAN be married).