Read the article. These are single-stall bathrooms. A whole lot of of office buildings and malls have them -- for folks with handicaps, parents who want to accompany an opposite-sex child to the bathroom, or even folks who just have hang-ups about shared restrooms. Some places put their baby-changing stations in there. The only thing unusual about the ones described here is that they have a tub and shower, which most office buildings don't, but makes sense in a dorm.
Emerson didn't add any new restrooms; they just changed the signs.
I confess. I watched one too many episodes of Allie McBeal and remain totally grossed out.