If your child doesn't want to look for solutions, this does not mean your child doesn't want to solve problems. Really. Your child isn't insane and *would* prefer if things were better. What's going on is that previous time spent "problem solving" was unpleasant and was itself a problem. Perhaps because it seemed boring and fruitless. Or because it involved the child being pressured to make compromises or sacrifices (same thing), or lectured, or asked questions he didn't want to answer. Or maybe "problem solving" previously interrupted other things like video games.
True morality isn't unpleasant or burdensome. Moral knowledge is knowledge of how to make choices. It's a tool that has information about how to get what we want, and what we should want. It's not arbitrary or artificially limiting. If something is a bad idea, true moral knowledge on the subject will include reasons why it's a bad idea and explanations of what will actually work well. And they will be persuasive. If they aren't persuasive, that indicates a *lack of* moral knowledge. If the "moral" alternative proposed doesn't sound nice, that indicates a *lack of* moral knowledge (either the proposal is wrong, or the explanation for it isn't good enough).