NFC will work from further away to improve 'reliability' in tap to pay and more

Yeah, make it easier to sniff

Looking forward to accidentally paying for someone else’s purchase at the next register over.

And sales of RFID-protected amiibo wallets and cases will start to increase.

There are tons of wallets out there with RF blocking and it's also very simple to add to an existing wallet using some aluminum foil or similar. As for the phone, you really should always require entering your pin or biometrics authentication before accessing your sensitive data like credit cards in addition to the phone needing to be unlocked. This should be done even with current tech because the scanners that thieves use have had much longer range for a long time. They don't care about following standards or RF interference laws.