This part I really do not understand. The undeniable fact that boys and girls are different in several aspects does not make either superior or inferior in value or in dignity.
On the other hand, anything can be read negatively if you put enough will and effort into it, as so many people around here demonstrate.
How about being a bit more constructive in our criticism?
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To bring some context:
I have a friend who called up other friends in the group and repeats over and over that there's no difference between the sexes, that it's artificial, ect. He did this when he dated a trans woman, yet didn't seem to realize that his partner felt so strongly about their gender that they changed it.
Sure it does. Boys and girls are different. Hence, they receive different treatment, which the OP was originally befuddled by.