Another way to put it --
You see Theresa Trad at your chapel, but she's busy going to college, etc.?
First you must ask yourself: are YOU ready to get married? Do you have a promising career, or at least a job? Do you have a place to move in to, in the best-case scenario that she fell in love with you and you wanted to get married? Can you afford an apartment or a house? The best way to prove that is to already have one :)
How can you rant about how women bide their time, if you yourself are not ready for marriage?
It's a sad fact of life that many American young men are immature. They play video games and watch movies, and their childhood is measured in decades.
How is a young lady to discern the good guys from the bad? Even if it's true that it's "Catholic" to stay home for a while after Graduation, it's also equally true that Momma's Boys DO exist, as well as loafers, layabouts, and bums. A young lady would do well to make sure she doesn't end up with one of those.
How is she supposed to discern? That's why I say the proof of the pudding is in the eating -- if the man is objectively established (place to live and a job), she can be morally certain he's not a bum.
If he's still living at home -- she has to sort through her feelings to figure out if she's just fallen in love with a nice pauper (the classic "love is all we need"), or if he's just being frugal. Let's just say there's a good chance of getting it wrong.