“Ask the simcha halls if they are giving deep discounts due to lack of demand?”
Maybe they need to build more Simcha halls.
“Are the kindergartens and nurseries closing since babies are rare?”
In my example, there are 1600 girls entering elemetary school, whereas 8 years ago there were only 600. This means that while the # of kindergartners and subsequently chasonos will be”h increase every year due to population growth,
the disparity(, and hence a shidduch crisis,) will grow accordingly, due to the standard age difference between the boy and girl getting married. It’s simple math, and your “proof” to the contrary is without merit.
“since a shidduch crisis means fewer marriages means fewer babies.”
In what way does a shidduch crisis mean fewer marriages? Or fewer babies? If the # of single older girls are increasing every year, there is a shidduch crisis, regardless of how many marriages or births there are.