Sem613: Assuming DY is correct, the push for BMG guys certainly affects those who are not looking for that type. First it creates the marketplace, which is pro-boy. Second, the push for BMG-type boys overpopulates that group (as many boys won’t start working until after Sheva Brachos is over), and gives incentive to be a “learning boy” (as they get supported, which is a much easier life than having to go work). The girls who want to marry working boys are left with very few (yeshiva-type) boys to date, as they are all still learning.
T613: It certainly contributes to why the crisis is less severe in the Chassidish community.