That is correct. You can head to Admin > Games, click "Servers" and uncheck the box there that says "Show on Menu". That will then limit which servers display on your Server Status.
Scratch that last advice. I ran a script that took care of it for you. So it should only show the main server now (by default). If you want to show more, you can still go to Admin > Games, click Servers, and specify them yourself.