Yeah my first thought on reading the article is that if enough actors cared about this they would redesign the standard for card readers so that the card goes flush into the reader without any protrusions (some are already like this) and then market this fact so that machines that aren't flat are viewed with suspicion, but I'm sure the costs to replace all the machines out there and do the marketing would be enormous at this point, and you would need buy-in from a ridiculous amount of companies so it is unlikely to happen.