TL;DR: Devs asked their Twitter if they wanted to see 150% breast jiggle physics, deleting the tweet and apologizing after some backlash, which in turn got them more backlash from the other side for caving in.
It was rather obviously meant as a joke, so I'm confused about what people were mad at. Did they think they actually intended it to be included in the game? I would've just liked to see that gif, sounds funny af.