Have you used the app? You may need to use the app to get the McValue and similar lower-priced menu items. It's a brilliant price discrimination strategy.
I don't even have a smartphone. Why should I put up with these insane prices even with a discount by tracking, when I can buy the same thing for <1€ at the grocery store that is literally in the same building 10meters away.
Using the app a small soda at McDonald's is ~$1 ($1.14 near me, but that may include the SF soda tax). Less than $2 for a large for those beckoning diabetes.
But soda is definitely cheaper elsewhere, and drinks, even soda, are usually a profit center for almost any restaurant, but a loss leader at grocery stores. I remember in the mid 1990s when Coca-Cola and then Pepsi were trying to stem the tide of a decline in sales. They drastically lowered prices through certain channels, particularly grocery stores and, most memorably, vending machines outside grocery stores, where the price dropped from $0.50-$0.75 to $0.25 for a 12oz can. Almost overnight poor and working class people switched from cheaper alternatives like Kool-Aid (which was healthier--much less sugar!) to Coca-Cola and Pepsi.
I agree the app is exceptionally inconvenient, unless someone else in the car is ordering, as well as privacy intrusive. But my point is merely that McDonald's is trying to cater to price-sensitive consumers without taking a hit to their revenue, and doing so more effectively than any other fast food chain.
