Changing the story would have delayed 7.1 and all updates afterwards. It's not logical at all to course correct based on feedback while remaining on schedule. It's not just "the writing" they would have had to fix, it would have been all dialogue in all languages, all scripted scenes that include any animation. Animating entirely new scenes, recording entirely new lines, translating entirely new material, etc.
And while I'm sure some would be perfectly fine with delaying all content because they don't like Wuk (I don't like her either for the record) it would not make sense. Wuk Lamat exists and probably will in the story for a couple updates at the least. The best thing you can do is to hope they see the reaction to her and adjust the future unset/unplanned content accordingly. Temper your expectations that they'll give up on Wuk Lamat before they have to.