Taking a break from shoujo anime for outdoorsy shows—Amanchu &c—and #AnimeFeminist nails why:

"… hold up a passive, childlike version of femininity as the ideal for girls. They are to be attractive and charming but must not be conscious of their own power. They should seek to be noticed by boys rather than doing the noticing and acting on it. They should appeal to a boy’s ego by needing help, not stroke their own egos by taking charge of their own beauty and charm." 😫👏😖

https://www.animefeminist.com/feature-how-princess-tutu-shatters-the-rival-trope/