Because it is unfair when someone supports someone, and their position, purely because of their gender. It is despicable behaviour. It is absolutely worth strong emotions.
>It doesn't say anything of the kind.
It quite clearly lays out a case that Horvath must be in the right, Tom must be in the wrong (and those supporting him will face the wrath of all women who will now not want to deal with them, because of the above), and Github is merely trying to clean their hands of it. Yes, it absolutely says so. All outcomes are only variations of the preceding.
>All in all, I detect clear evidence of an angry person
Take your white knight act somewhere else. Your particular form of discouraging disagreement is disgusting. No, seriously, it is vile, and is the sort of banal ignorance of people who have nothing interesting to say.
It is actually remarkably paternalistic how many take stories like that: She is a woman, so she simply must be the victim. He is a man, so he simply must be the villain. Yet this base assumption goes unstated and simply assumed, as if we're all in agreement. But we aren't, and stating that women are as great as men in all things, including the negatives, is important, because brave knights such as yourself fail to understand this.