Very simple plots are not the same thing as crappy plots. And limited dialogue does not have to be crappy dialogue. In the purest cinema dialogue and narration are in service of the spectacle in a way that's very different from plays and television. Think Kubrick, Malick or David Lean movies. Or Star Wars and silent films for that matter. And yeah good action films can be like that too.

"The other big thing I wanted to do was to tell a story with very little dialogue. It’s a world in which people say very little. And I wanted to have one extended chase, in which you discover the backstories of the characters on the way. All those things come together. A post-apocalyptic world allows you to make it very, very elemental. I like to call them Westerns on wheels. For the same reasons why the Westerns had that very essential quality, you can find that in Mad Max Fury Road."
George Miller

and this one too...
"I guess the main thing going through my mind when we made Mad Max (1979) was I wanted to make a film which I saw as pure cinema. I started off being interested in mainly painting and drawing. And it wasn’t until I started to edit film, I had the opportunity to do that, where I suddenly saw — oh my god, there is the fourth dimension if you like, time, you could bring into two-dimensional space. So it became basically kinetic pictures that I was mainly interested in. And it was only later that I got interested in narrative. So with the first Mad Max (1979) I basically wanted to make a silent movie. With sound. The kind of movie that Hitchcock would say, 'They didn’t have to read the subtitles in Japan’. A film that basically played like a silent movie and… because for me, once I got interested in cinema as moving pictures, I went back to the silent era."
George Miller