You're making the unreasonable assumption of good faith on the part of the app developers. It could be designed to accurately distinguish citizens from nonciti

You're making the unreasonable assumption of good faith on the part of the app developers. It could be designed to accurately distinguish citizens from noncitizens, or it could be connected to a database of online agitators, or picking out facial features of targeted minorities without regard to their personal identity, or some combination of all of these and worse. You don't know.