Same here. I've bought several batteries from WM over the years. I already know what group I need and just pick one right off the shelf and give them the old one. Not once has anyone ever questioned me about anything.Never talked to anyone when buying a battery at Walmart. Go to the shelf, look for date stickers, find newest, test voltage, grab best one, go to self checkout and check myself out, it guides you through the warranty registration at the register.
Sounds like a load of poo to me.
Put a Maxx in my daughter's Yaris about a year ago.