I was wondering if that would be the next post.
I'm not sure what the means one uses to pay for products and services has to do with thinking they should be able to open their car door when needed has to do with one another.
I may have sat in the sun cooking my silly brain under the tin foil, but last I checked the USD was still legal tender and accepted at many, dare I say most businesses in the US. I can't speak for other countries as I have not traveled outside the US in a couple years. I would guess most transfers are digital these days due to convenience. It's true that some places (seemingly due to fear over accepting physical tender) have moved to accepting credit transfers. In fact, there are some who stopped accepting cash long ago due to fear of robberies (e.g., bars in larger cities in questionable areas). Either way, the fact that companies accept payments that are not physical (CC, debit, phone, crypto, etc) does not mean that the world has abandoned the Luddites (whoever they are).