It's probably also the kind of fancy glass you can get to go foggy on command (hopefully it's fail foggy, i.e. needs a small charge to be clear) so that when you latch the door the stall becomes private.
These are the new and updated "American Privacy Toilets^TM ", where past complaints of doors not reaching all the way to the floor and ceiling has been addressed and tolerances have been adjusted to avoid other people from peeking in.
The most used lie is "I've read the TOS and PP" before clicking in "Accept", the biggest joke is the sentence with which start every PP "Your privacy is very important for us".
If true and not Photoshop, what a colossal, awful waste of money and resources. They are fucking public toilets, no-one wants to see that shit... Ever.