The cats that are complainin' about the New Outfit for Sarada Uchiha in Boruto hadn't comprehend the history of the Kunoichi in Japanese History And Legend and how different they are from the Male Ninja/Shinobi. They used the Bodies for deception.
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The whole point of Ninjutsu as a whole is about Deception as well as Stealth And Espionage. The Kunoichi were no exception to that.
Most of the Kunoichi in Naruto wear these Outfits they still maintain Dignity, Grace, And Strength. So for cats to say they're Sex Objects are actually Sexists themselves despite tryin' to claim that they're fightin' against Sexism.