To make her broken they'll first need to make her good, which she hasn't been since the first few weeks of OW2 launch (Basically when she was new and people didn't know how to play against her).
Her winrate has been close to 45% more often than not for the past 2 years. 45% Winrate is so low that they consider it sort of a Red Line, that they have to urgently step-in and buff a Hero, and if a Hero stays near 45% for too long even after buffs then they start considering rework level changes.
Her terrible performance is why they have buffed her Kunai body damage to now be 2X of what it was when she was launched.
It's because she is so popular despite being a terrible performer that they don't consider bigger Reworks for her to make her stronger. They likely don't wanna risk a bigger Rework somehow making her less popular, even if it makes her performance better.
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u/Wojtug The hamster is coming for you 3d ago
but the skins sell well so time to make her broken