It's entirely possible that there are still folks out there who think everything about making movies is just awesome and glamorous. I would attribute that to a lack of documentaries such as this.
Grip & Electric are vital to hollywood productions. Many small indie films don't need the full scale of what this doc shows, some even make the mistake of thinking they don't need lights because of how sensitive their camera is. Fact is, hollywood films looks great because of all the design and lighting that goes into them, and it's great to see some behind the scenes of what happens on those big sets.