Tzippi,
No suggests that age be the driving force behind shidduchim. This issue on hand is making it a focus. There are so many quality 21,22 girls etc. out there. It’s important that the boys be encouraged to go for it. If boys were ready to say the first three girls I date will be within 1 yr of my age, the problem would be greatly resolved. The reason? A overwhelming number of boys get married to one of the first few girls they date. Plus it would remove the stigma from dating a girls who suffers from the “why isn’t she married already” syndrome known to many boys.