Well I've seen a lot of incompetent cashiers. Especially in summer when the real ones are on vacation. I'm not sure what that proves besides that being a cashier isn't as easy as you might think.

I assure you that pressbyrån accepts cash and you can buy tickets there to get to work. Also having a long subscription for public transport on the phone is a bad idea, because if you drop your phone you'll also lose your subscription. And depending on how many days you had left and what phone you had, it could cost you more than the phone.

And handpicking restaurants that don't accept cash is no more a proof than if I were to do the same but handpicking restaurants that don't accept cards.

Happy to hear of any restaurants that only take cash in Sweden tbh