Marvel movies are so intellectually bankrupt it's almost indescribable how shallow and empty they are.

In your standard story with a protagonist/antagonist structure, you have an overt physical conflict, e.g Javert wants to catch Valjean. But this is underpinned by a philosophical struggle, a hardline and inflexible justice against a nuanced and redemptive viewpoint. Over the course of the story the protagonist overcomes the antagonist, but not just on a physical level. Vajean does not win by punching Javert really hard, he wins by demonstrating through his actions that his viewpoint is more correct and his opponents' is fundamentally flawed.

Even children's media understands this. Take a bog standard animated movie like Zootopia. There's an evil sheep that wants to beat the heroes. But villain has a defined philosophy: predator and prey animals cannot co-exist, so one must dominate the other. The heroes not only physically oppose the actions of the villain, but also oppose this viewpoint. And through their actions they show that it is mistaken, and co-operation and mutual beneficial relationships between predator and prey are possible and good. Nothing complex, but there's something basic there.

Meanwhile, Marvel capeshit can't manage even that. Even when they give the villain an underlying philosophy, they forget to have it properly opposed. Thanos has a viewpoint that the universe is heading to a Malthusian catastrophe, and only a radically brutal solution can combat this (we'll ignore for the moment that his solution makes no sense). The heroes oppose this solution because of its violence, but they neither propose an alternative solution, nor offer a challenge to the prediction its meant to avoid. Instead they punch him a lot until they can gather up the magical stones to beat him, and then literally wish him away. The underlying philosophical dispute is never even addressed, never mind solved.