I'm not super familiar, but they say in the webpage that it is specifically for Universal Scene Description, which is formally for graphics. Although, after a quick google, it looks like they do have a simulation package which then runs on top of Omniverse (Isaac Sim?), so I guess that is Nvidia's robotics offering.

My general experience with other commercial offerings for simulation... is not great. In my experience, people usually end up migrating to gazebo, but I have been away from the field for a while now so it could be different. It is probably a situation where Nvidia will have a few coporate clients that they prioritize, and you are on your own to get it set up if you aren't on that lists. Pretty normal.