Far from it. Looking through my phone apps, Starbucks and Dunkin credit the highest eligible item, as does Wawa. Taco Bell and McDonalds are slightly different in that you get to (or really, have to) pick exactly what to want to apply the promo/free item to. But Chipotle is the only one I know that says oh, if you just buy one item you can use your reward for it, but if you’re a better customer and buy more stuff at the same time, then we’re going to cut your reward value by a third and hope you don’t notice or care. It’s a poor practice.