The rules for how Wikipedia is edited are ultimately set by the people who run Wikimedia. They have the final say. It's a centralized service (there is a single

The rules for how Wikipedia is edited are ultimately set by the people who run Wikimedia. They have the final say. It's a centralized service (there is a single Wikipedia at a singular domain, being the sole source of truth). In the context of this discussion, there is no such notion of a federation of wikis on various hosts contributing to the content. There's obviously no decentralization of Wikipedia. Wikimedia is therefore the centralized authority.