I actually think that Sunset Overdrive may be another casualty of the prevalence of gritty realism in popular art these days.
We have all noted, and Yahtzee has often lamented, that games, movies, tv, etc. don't have any fun anymore. They are too focused on delivering a dramatic, "realistic" experience, and so convinced that this is best conveyed by grim despair and and deep gray morality. Sometimes this works. Sometimes it is overdone. Often it is a crutch rather than a legitimate artistic statement.
So here comes Sunset Overdrive to save the day, and blow the lid off our dark realism, right? Not really, no. Because if their game was meant to be a diametric opposite of the prevailing storytelling style, then it would be as Yahtzee describes the Monty Python song. It wouldn't be so insecure about winking at us and telling us that we should be enjoying the nutty and colorful world, it would just give us something screwy and joyous and fun. Instead it went with a sarcastic tone and sardonic humor, and sarcasm is not a joyful form of humor; it is used when there is nothing to laugh at, so you must force humor on the situation. Sarcasm is the comedy version of gritty realism. If they really wanted to undermine the status quo, they should have ignored it altogether and given us a gleefully unconcerned apocalypse.