This is laughable, I understood women were the crueler sex as a child, boys that were bullied were laughed at by female staff, only male teachers ever gave a shit. Think back and you can recount countless anecdotes of your own I'm sure, but you're blinded, most likely.
The whole western tradition, and pretty much all philosophers taught that women were not only the weaker sex, but the more wicked one, that's what the myth of Pandora is about, Adam and Eve, and so on.
It's only romanticism in Europe that started to bring in contrary views (though this is taken wildly out of context, women were not venerated a priori, they had to earn it, as ladies), and kicked into overdrive in the Victorian era.
Nietzsche called this shit back in 1886
The weaker sex has in no previous age been treated with so much respect by men as at present–this belongs to the tendency and fundamental taste of democracy, in the same way as disrespectfulness to old age–what wonder is it that abuse should be immediately made of this respect? They want more, they learn to make claims, the tribute of respect is at last felt to be well-nigh galling; rivalry for rights, indeed actual strife itself, would be preferred: in a word, woman is losing modesty. And let us immediately add that she is also losing taste. She is unlearning to FEAR man: but the woman who "unlearns to fear" sacrifices her most womanly instincts. That woman should venture forward when the fear-inspiring quality in man–or more definitely, the MAN in man–is no longer either desired or fully developed, is reasonable enough and also intelligible enough; what is more difficult to understand is that precisely thereby– woman deteriorates. This is what is happening nowadays: let us not deceive ourselves about it! Wherever the industrial spirit has triumphed over the military and aristocratic spirit, woman strives for the economic and legal independence of a clerk: "woman as clerkess" is inscribed on the portal of the modern society which is in course of formation. While she thus appropriates new rights, aspires to be "master," and inscribes "progress" of woman on her flags and banners, the very opposite realises itself with terrible obviousness: WOMAN RETROGRADES. Since the French Revolution the influence of woman in Europe has DECLINED in proportion as she has increased her rights and claims; and the "emancipation of woman," insofar as it is desired and demanded by women themselves (and not only by masculine shallow-pates), thus proves to be a remarkable symptom of the increased weakening and deadening of the most womanly instincts. There is STUPIDITY in this movement, an almost masculine stupidity, of which a well-reared woman–who is always a sensible woman–might be heartily ashamed. To lose the intuition as to the ground upon which she can most surely achieve victory; to neglect exercise in the use of her proper weapons; to let-herself-go before man, perhaps even "to the book," where formerly she kept herself in control and in refined, artful humility; to neutralize with her virtuous audacity man's faith in a VEILED, fundamentally different ideal in woman, something eternally, necessarily feminine; to emphatically and loquaciously dissuade man from the idea that woman must be preserved, cared for, protected, and indulged, like some delicate, strangely wild, and often pleasant domestic animal; the clumsy and indignant collection of everything of the nature of servitude and bondage which the position of woman in the hitherto existing order of society has entailed and still entails (as though slavery were a counter- argument, and not rather a condition of every higher culture, of every elevation of culture):–what does all this betoken, if not a disintegration of womanly instincts, a defeminising? Certainly, there are enough of idiotic friends and corrupters of woman among the learned asses of the masculine sex, who advise woman to defeminize herself in this manner, and to imitate all the stupidities from which "man" in Europe, European "manliness," suffers,–who would like to lower woman to "general culture," indeed even to newspaper reading and meddling with politics. Here and there they wish even to make women into free spirits and literary workers: as though a woman without piety would not be something perfectly obnoxious or ludicrous to a profound and godless man;–almost everywhere her nerves are being ruined by the most morbid and dangerous kind of music (our latest German music), and she is daily being made more hysterical and more incapable of fulfilling her first and last function, that of bearing robust children.