Rod Speed submitted this idea :
In reality, how easy is it for a thief to use RF to read your credit
card? Surely they need to get very close.

Indeed. Its mindless paranoia.

Sometimes we agree lol

I would suggest under ideal conditions it is possible, without the
owner knowing. You only need to makes the conditions less than ideal,
to make it not work - a cooking foil liner to your wallet more than
satisfies that.