This means those that go into this version of the game are subject to the rules set forth by the owners, meaning you are not free to do what you want and are at risk of being kicked out no matter how much time you have invested.
Things in this world are still getting updates and fixes and is a growing project. While there may be issues with it, it atleast means that the developer listens to the users and will address issues they have, which is a good thing in such an expansive project.
While this project is massive and quite an ever growing accomplishment, the seas in the game are quite bare and offer nothing. For such a lore laden world it would be nice to see the oceans as an area to explore as well to the land based overworld.