All the subtle trickery manipulation that the smart phone's doing to reality is concerning. Smoothing people's faces, making their eyes pop, enhancing the shit out of the colours, and now plopping fake objects overtop of the real ones.
Future concerns of this technology should range from a low-key disconnect from reality, to the complete inability to photograph certain objects or locations.
Imagine dusting off a 30 year old digital camera, finding some AA batteries to put in it, snap a selfie and then realizing just how ugly we all are and how washed out the polluted world actually looks without a bunch of narcissism-pandering enhancements.