“even you must admit that can’t be accurate. surely boys have dates and are getting married to girls.”
Which also means girls are getting dates. I think what she really means is that boys have the upper hand, a list of 47 girls to choose from at any given time, while these 47 girls languish on any number of boys lists waiting for them to say “yes”. Perhaps flip the tables and redt shidduchim to girls first and if still no yes from a guy, despite a yes from the girl, there is more going on than just “not enough bodies to go around”.