When appending geometry nodes objects into a different file using the Asset Browser, it places the original objects in addition to the geonode object, if the node network point instances another model. I've demonstrated this below (the gears could be any mesh object, like a monkey head).
Here's the original nodegraph setup.
And the result of appending it into a new file. Notice the superfluous gear mesh to the right.
Is there a way to avoid this behavior from the asset browser, and have it only place the geometry node object, similar to how instanced collections are appended?