Well then what is the fucking point of all this?=
A primary use, today, is at the airport, as TSA will accept (or at least try to accept) the digital ID QR code, and that can make moving through the lines a bit faster for everyone. If you have never flown, nor mind longer lines, this is would be uninteresting to you.
Some states also add in various age verification QR codes, that, maybe, eventually, mean that retailers and bars can use those to verify you are sufficient old to buy that beer, and equip police (and other agent staff) with readers that can just read the QR code that you display on your phone rather than you needing hand over your physical ID (in no case do you have to hand over your phone, the QR code provides the needed data).