Because it's strictly better than the status quo? Given the choice between taking a crap in public and leaving a turd on the sidewalk vs. taking a crap in public and having it flushed how is the former preferable to the latter? The unfortunately reality is that creating a private space for relieving oneself is regularly abused as other commenters have pointed out. It's an instance of hostile design 1, but one that is evidently necessary.
Its also a form of restroom that is common in many other countries. Such a type of toilet is not new.
Its also a form of restroom that is common in many other countries. Such a type of toilet is not new.
1. https://en.m.wikipedia.org/wiki/Hostile_architecture