1) I’m not hung up on it, it was an aside. I have issues with the way some people act in shidduchim (as well as in other pursuits). Not everyone lives throw lives in every aspect according to Orchos Tzaddikim. I think if girls were in the driver’s seat, we’d have problems the other way. Evening the playing field would be a positive even aside from getting more girls married. I stilk think that evenly distributing dates (how would that be done?) would merely be treating a symptom.
2) If there were, say, 12% more boys born than girls (currently it’s about 4%), the numbers would be roughly even. If hypothetically, I were presented as fact your three assertions, I would sooner assume that there were, 20 years ago, 12% more boys than girls born, than assume that the laws if math were suspended. Either way, I wouldn’t close my eyes to the current reality.