I'm not seeing a lot of people talking on the phone outside.

Texting in public was never an issue. Not sure what you mean here.

Questions like what song is running are mundane.

The advantages of qr code are still very limited. Restaurant menu? Sure. What else? Perhaps wifi code? Okay.

But what else really? Driving perhaps I can see that. Instead of adding are in the car I might want to wear an AR car version but what then?

I don't believe people will be willing to elwear any type of glasses if they don't have to every day. If you then don't have it every day it will not become a sane default.