I dont understand who the moderators are and what role do they play in the whole ecosystem of this project? I understand that they are practically the most significant people, am I right?
You are not quite right, the most significant people are the authors, the project team emphasizes this. Moderators only make their assessment of new content.
Yes, but the outcome of this assessment is whether the content is published or not published, which is why I say that they are the most important people in this project.