Who are Wikipedia Editors?

Wikipedia editors are those who can edit Wikipedia pages and articles. It’s not that they will edit any page or article. Instead the one that needs editing. For the purpose of editing, they have to create an account and register for that. When they find Wikipedia pages that need editing they could easily edit because of them being registered. Due to the registration and owning an account they could even create their own pages where they could upload content without their IP address being known to the public. What are your thoughts on this?