I don't think the Baku are asses at all. That planet is their home, and has been for a long time. They have as much right to live in their home as you do yours.
I'm sure they would be amenable to the rings being studied, and might be willing to provide insights into it, were it not for the Sona.
If I were being kicked out of my home of hundreds of years, I'd be "an ass" too.