I'm upset about those credit card machines at assemblies too. I remember in the Awake,in the Watching the World segment,they criticized the churches for doing that same thing.
I'm not phased as much about the credit card terminals. 97% of American currency only exists in digital form. Employers began refusing to issue paychecks a few years ago, only paying you on a debit card or direct deposit. People have now grown up having never written or handled a check. It was inevitable. I predict they will start accepting Paypal and Bitcoin next.