You said theres a higher birthrate, and then that your not working from the birthrate. Which one? And how does anyone know there are more girls in shidduchim?
Personally I can think of more single boys than girls. I’m not really sure why I should change to adapt to a system that seems to have no proof (other than an assumed birthrate for our community and takes no other factors into account) especially when my own experience says otherwise.
The paragraph implies that Hashem created extra boys for the sole purpose of an age gap defense (“then the age gap would be worse than it is already”) with the actual people and shidduchim being a secondary goal, and if some people have to suffer because it doesnt match the agenda, then so be it. And I strongly disagree with that implication.