I'm kind of with
@EricsBiscuit. A good superhero movie, or any fantasy story, gives you a set of new rules for its fictional reality and the fun is exploring and imagining how they work and what that does. The Antman movies are especially bad about giving a fictional set of rules for its world and characters and then breaking or ignoring those rules whenever it feels like it.
Sometimes when tiny Ant-Man falls to the bathroom floor, he breaks a tile when he hits it. Then, when he falls onto a wooden surface, nothing happens. The writing and worldbuilding isn't diligent enough to be engaging.
If the movie never took time to explain what the rules are supposed to be, or didn't have stretches where the dramatic tension is based around the viewer anticipating what would happen, it wouldn't be such a big deal. The Dr. Strange movie, for instance, knows better than to actually pin down how the magic actually works.