Gavra-at work, please, also keep in mind that in earlier days it was not a shaila as the number of avreichim in EY was small, and even the frei Yidden did not mind it.
So you are claiming the Chazon Ish would not have asked for an exemption for Yeshivaleit if he knew how many there were now? That there should be a cap on the number of Kollel in EY, and the rest should be working and possibly joining the army?
(Are you sure that you are not MO? LOL)