More and more people are able to access information - thank goodness we have the Internet and if you are interested you can find things. Which is different than even 20 years ago.
It's one thing, holding open the door for someone at a grocery store, or the library, or just about anyplace else. But the doughnut shop is a different thing altogether. This is a get-in-and-out-as-fast-as-you-can operation. There's no room for courtesy or chivalry here.