This bathroom was ahead of its time. While the United States argued over who can use which restroom, and what those restrooms should be labeled, this one said "screw it. We'll label it confusingly and let the people figure it out." It's like a social experiment. Do you go by symbols or by words? Or maybe you're a man wearing a moomoo like Homer Simpson in that episode of The Simpsons when he got too fat and you see this, finally feeling like you've found a restroom for you.
I personally think that before we even begin to think about how we label restroom, we need to figure out the public restroom situation. I'm sick of being somewhere with no public restroom in the vicinity. Let's use those tax dollars on public restroom, not jets and tanks. When's the last time you went number two in a tank?