Am Brit, have 3 credit cards, am I missing something?

I only know one adult who doesn’t have any.

Edit: I think you might be confusing us with France, where the vast majority pay with debit cards.

You might be thinking of Germany where cash is still preferred by a large part of the population?

I think you need to reevaluate your source for that. They are incredibly common here.

Source for this bullshit?

completely false.