I think looking at cash as baseline made sense a while ago, but in this day and age, we see self employed people running a side business with a card reader and

I think looking at cash as baseline made sense a while ago, but in this day and age, we see self employed people running a side business with a card reader and an iPad, and sell paintings on the beach for 3 hours during the weekend. Asking these people to handle cash instead feels like an undue burden on something that is a very selective side gig. I've seen this a lot in mildly remote locations, and I'd assume they wouldn't be doing it if it was more of a burden, like having to deal with the cash flow.