So? Nothing about it is realistic, science fictions requires a basis of reality, it’s supposed to be something you can see your world in or part of the galaxy. Along those lines.
Hard science fiction is when it tries to fit into our current physics and accepted notions.
Edit: It’s not more science fiction than Star Wars and Star Trek, and both of those are considered “science fantasy”, I don’t think it reaches even that level. It’s fully in fantasy, don’t let the “earth” and “human” aspects conflate it.