I do not disagree. Let me rephrase: I think it is much more important to discuss how much we want to spend to raise our children or how and how much we need to work, than discussing boys vs. girls.
Of course singing more to your children is probably a good idea in general, and being sensitive on how you might (without a good reason) treat them harshly or differently, is also a good idea. But for that you need energy, and that energy will then be missing somewhere else, assuming things in general are efficient. And if they are not efficient, we should discuss why they are not.