Why the AI Pin has no chance of replacing the smartphone
Actually my money is on people ditching their smartphones and going back to novels. All the "search for restaurants in my area", etc. used to be done before going out the door, using a phone book, maps, and some planning; there's no reason we can't go back to that way of doing things.
This AI pin sounds ahead of our time for a certainty. It's so far ahead that humanity has no purpose for it, or desire for it. Your description also sounds like a potential tech disaster waiting to happen, where the user is the ultimate victim. What could go wrong without an interface, a way to change or update without another device present? Perhaps they didn't brainstorm this idea quite enough before deciding to produce it.