Also, there are always people better than this, but they are trying to get the hell out quickly.
My fast food cashier days were a couple decades ago, but once they figured out that you were one of the ones who could: speak, understand others, do math, not walk away and do or deal drugs, it was out of the hot and sweaty kitchen and up front dealing with the stunted IQ and drooling creatures they called customers.
We used to do things like punch in the orders in the drive through, pull them back up, cash out, and clear the screen so the timer would clear when there were idiotic sales in a small college town (Houghton, MI + Michigan Tech) like $2.99 20 pc Nugget meals, or 99¢ Whoppers (even better with free cheese and bacon, or free slushies, etc) but you get the normal skeleton crew. Piles of paper receipts, cash drawer with a key in it to pop open on request, and making change in your head (and changing orders at the window was always fun).
But it's not like the whole store was full of people who could do that. Certainly the long time permanent lifers, whether managers or not, weren't up for it. And some of the youthful crew probably needed Velcro on their shoes instead of laces.
You get it all with every generation.
PS
Hell, try this - how many of you could remember phone numbers like a boss? Caller-ID and dialing every number would burn them in and with the right future AT posting personality, you were likely a walking phone book. "hey what's so-and-so's number?" "BAM 111-4567...wait how do I know that?"
Nowadays? If the cell phones and such died? So screwed. I know my number and my wife's number. I know who is calling because their name and picture shows up on my phone.