It shouldn't surprise anyone that the museum would be staffed by a person who "doesn't know anything", especially to a group of people who think they do.
I don't expect the D&S to work too hard to put a "knowledgable" employee on duty in the museum and no one else should, either. Attentiveness should be expected, however. On my recent visits over the last two or three years were not like this at the D&S museum, and I'm sorry to read of this today, but I'm still happy the museum exists so we don't have to look at the equipment through binoculars while in Durango.
Thanks, Josh, for the post.