Tbh I don't get how a utilitarian can watch SU and enjoy it. They literally had the capability to win the war but decided not to because some war criminals might die. Then they proceed to not do anything with the magical cure they have!
Let me tell you a secret about consuming media while being a utilitarian: it’s all like this. All of it.
Recently I mentioned that in Luke Cage, there’s a character whose research is pretty close to stopping ageing. The heroes actively try to prevent him for continuing it and go deal with some gang conflict in Harlem rather than staying around, making sure he proceeds ethically with his research, and helping save billions of lives.
Or consider iZombie. In this universe, zombie-ism does not automatically leave you a mindless corpse shambling about eating people, and those infected behave mostly like normal humans (unless they run out of brains to eat). There is one villain whose business model is infecting people and then selling them a really expensive brain delivery service. Obviously evil, yeah. Our heroes have arrived at a cure for the disease, but they only have limited samples. Do they mass-produce it, offer it to everyone affected, and end Villainous Guy’s schemes? haha lol no, they first interfere with villainous guy’s schemes, risk a massive zombie outbreak with no easily available cure yet, and waste their few sample of the cure, making it much harder to mass-produce.
There are good reasons this happens, of course. It’s more narratively interesting to have your characters be forced to choose between the person they love and humanity (and choose love), or to say categorically no to evil people and their evil methods rather than coldly calculate if associating with evil people is worth it. Steven Universe is neither the first nor the worst offender, by far.
(I do love me some utilitarian protagonists, mind you, that’s part of the appeal of rationalfic. But I’d limit my enjoyment of lots of great media if I demanded it all agree with my vaguely-specified ethical philosophy)