Who gets to decide what gets posted here?
You do. Go ahead and post. A more complete answer is, “We all do.” All Wikiversity pages may be created and revised by anyone. In this sense a Wikiversity page is being created by a community, by those who choose to be active in the process. The result is pages which reflect the current consensus. Note that older versions can always be revived. Any vandalism can be undone by any user.