Tzippi: at the risk of going in circles. With all do you resepect to your democratic right to voice your opinion. The Roshei Yeshiva advising NASI (and many others) know that its the right thing to do.
For two reasons:
1. The boys own best interest
2. the devastating shidduch situation demands this kind of minor action.
Would you like a list? of Roshei Yeshiva who think it would be better for boys to shorten/cut out the time they learn in EY.
They can wait to date until they are 27+ if the individual boy feels it is right for him. No one is telling anyone when to date.