The only real issue with RFID in this application is the false sense of security it gives people who don’t understand the tech. The read-range of these cards is very low, sure you can construct a more powerful driver/antenna/receiver but the physical size of the antenna has to increase so dramatically that it quickly looses any stealth. To read at 1M you would need an antenna panel that is > 1 M-2, and some pretty sophisticated signal processing. And while “if it can be done someone will do it”, you can always just put a strip of tin foil in your wallet”]
Source: https://gizmodo.com/rfid-credit-cards-can-be-hacked-with-8-worth-of-stuff-369796