Why can Beyonce brag about kicking a guy in the balls?

Anonymous
https://www.cosmopolitan.com/entertainment/celebs/a48724/becoming-beyonce-book-revelations/

I don't get it. What if this was a male star who hit a woman in the stomach so hard that she collapsed?
What is the difference? Why is this something to brag about or be proud of?

Why does this get light of as "Girlpower", or "He deserved it, he provoked her", or "Damn, she feisty, don't mess with her" or "Hell hath no fury like a woman scorned, lol!"?

Why is violence against men a joke when committed by women?
Why can Beyonce brag about kicking a guy in the balls?
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