There's been a ton of FUD around this concept since the moment OMNY was announced as the MetroCard replacement. They've committed to supporting phones with NFC,

There's been a ton of FUD around this concept since the moment OMNY was announced as the MetroCard replacement. They've committed to supporting phones with NFC, contactless credit and debit cards, as well as a future vended card that can be paid for with cash, likely from any nearby convenience store or machines in the station. Yet despite the hundreds of options that enables, there are still people spreading fear that this change will somehow lock out hundreds of thousands of people from using the subway (the argument being that lower income riders don't have access to the contactless payment methods). I've seen nothing to indicate this will be the case and they've committed to supporting the additional card before retiring the existing MetroCard.