Lion King is an actual adaptation of Hamlet that tells its own story following the rough large plot beats of Hamlet. Avatar is just Pocahontas set in the Halo universe, with the names switched.

And at a base level, the Disney version of the Pocahontas story is not a particularly interesting or nuanced plot line, which makes its adaptations that much more plainly obvious and surface level, compared to something introspective like Hamlet.