I like it, too, but the "What is this?" text should be displayed on the home page, not after clicking. It would assuage most of these types of concerns.
it is displayed (or at least it's supposed to be displayed) at the same time that the "enable webcam" button is[1] - if it's not that's definitely a bug! Are you on mobile? Would love to fix whatever you're seeing.
[1] they should both fade in as soon as the facial recognition stuff loads