I'm sure they didn't send in their best IT experts in the first wave. Billy Bob likely won't know to keep the machine from going to sleep, esp in the chaotic scene.
Billy Bob is a name stereotypically used to refer to someone to imply that they are rural, ignorant and/or unsophisticated.
Billy Bob (short for William Robert) at one time was a common set of first names for Americans that lived in country areas.
I see, so its usage was as openly bigoted and contemptuous as I had suspected.