Not destroy it, just trying to fix the horrifically inaccurate depictions of the cultures when the movies were animated.
I know the Costuming team worked with representations from the cultures to make more historically accurate looks. I'm not saying I like/dislike the dresses, just trying to provide understanding as to why the changes happened. I'm drastically simplifying the problems, but here were a couple of the points I heard:
In the case of Pocahontas - the material of the necklace in the movie would have been nearly impossible for Native American's in Virginia to acquire. It was more common to utilize shells & stones for decorative details on clothing and jewelry.
In the case of Jasmine - women of higher class and royalty dressed more conservative, those who exposed their mid drifts were often used in ways to please men... if you catch my drift.