That's exactly correct and I am putting on a Post-It that you are absolutely owed a +REP tomorrow.
My observation on Burger King is that they mean to appeal mainly to college-age males, and worker-type guys (lunch) and really focus more on price than quality. Their food, from location to location, is just north of horrific and is merely edible. I don't think they strive for anything more than having food that is not abjectly disgusting, but if you use the app, they practically give you the food for free, compared to others.
I wanted something quick one day two years back as I was in transit with the kids and the only thing nearby was Burger King. Gross, but the boy complains of hunger. $12.99 and I got the equivalent of four value combos, except with no drinks, but I always travel with big bottles of water in the car anyway.
As long as it doesn't literally make you vomit, there's simply no way to argue with that kind of value.