I use cash as much as possible and many young cashiers are unable to count change either when I give it to them or when they need to give me change back.
They have terrible math skills and are are not used to the different coins, sometimes counting nickels as quarters and vice versa.
Plus, many can’t spell nor can they read cursive.
All by design. BTW, whatever happened to that crap CORE garbage?
And they can’t tell time on an analog clock.