From a security point of view, I am not comfortable giving a user unlimited access to the server. I don't know what solution pgEdge is implementing, but granting full access to the server when it should only operate on PostgreSQL is a security concern for me.
the Getting Started guide is definitely a different mindset than what we would recommend for Production Ready, particularly if there's specific security requirements in mind. With that being said, it should be more clear, so we've reported this to our documentation team to make sure it is!