Fascism is a human ideology which seeks to enforce class hierarchies of humans. If the planet is a conscious living being, it exists outside of the human hierarchy, most likely above the human hierarchy.
Fascists are people who want to enforce these oppressive hierarchies to solidify their own position on the human hierarchy. A planetary being exists outside of this concept.
Let's say you are outside and you see a flying bird. Do you ever worry that the bird could be a fascist? No, because the bird exists outside of this concept.