It seems like you are no longer discussing the shidduch crisis i.e. why are so many girls single; and you are no onto a totally different (albeit valid) discussion as to the kollel/parnasah discusiion. These are two SEPARATE discussions that unfortunately many people become confuse.
If the boys are getting married and they are marrying girls then your point is NOT related to why so many more girls than boys are remaining single.
Somehow or another the boys who you claim “don’t seem to get their act together” are finding (plenty of) girls to marry. It might not be the girls in your crowd, but the shidduch crisis isn’t about this crowd or that crowd. WHY can’t we figure out a way to enable every girl to get married.