No, I didn’t say that.
What you are proposing is closing the age gap. In order to do that pretty effectively you need to have 21 match up with 21 and 19 match up with 19. Otherwise, there will definitely still be more women than men.
But who do the 19 year old women date? There would now be a stigma of dating outside your age range (lets be real – anything that isn’t considered the “norm” gets a stigma, and you are changing the age stigma) so a 19 year old girl would either have no one to date, or date the 24 year old guys who can’t get anyone else. You arent solving the problem, just moving it around.
Girls come back from seminary around 19. Most of them start dating pretty quickly. Most 19 year old boys are NOT dating. Many arent even dating until 22+. So there is STILL a 3 year age gap at a minimum.
I personally think people should date the right people, not the right age.