Sorry to break it to people but this sounds like a 'test market', or possibly more meaningful, a 'market test'.
Doesn't sound much like a change of heart to me. They invested HUGE money in the 'local' Kroger (and affiliated stores here) and seemed to double/triple down when each idea crashed and burned. I remember seeing their 'scan/bag/pay'(?), and even did it once. I saw HUGE shrinkage in its future, and potentially massive monetary loses, but they were so determined to shoot themselves in the foot, who am I to have any sway on their OC desire to harm their shareholders. I think I still have the free bag they made me use while I did their ridiculous project, once, ever.
It smells like Home Despot, and their use of Apple Pay, and then it wasn't, and possibly to be reinstated, and maybe not, and 'hardware problems', and who knows...
People use Apple Pay because it's simple, and WORKS! Supporting it will help attract more customers. Heck, Speedway uses Apple Pay, and it's almost as simple as falling out of bed: So simple, so easy, so quick, so 'perfect'... But retailers are free to harm their shareholders anyway they feel they can get away with. Like, if there is a cost for the people that use it, and not for others, what's the loss? Really, what is the loss? Most (over 50% don't use it) won't result in a potential high charge, so 'Let's screw everybody, just in case they try to use Apple Pay!'.
/rant