I didn’t say it can’t happen. But the fact that it has to be done at close range and in public means it’s not a common way to get card numbers. How many video cameras would that guy have been on to get to you in that store? Probably a dozen at least.
Compared to the risk of data breaches and your information being sold online or even just falling for a phishing text and putting your own information out there the RFID thing is a drop in the bucket. There are a lot of things in this world worth worrying about before you get down to RFID scanners.