Why do white-collar employees believe they are more valuable than the production workers who are actually taking part in making the end-product?

I'm referring to Tesla's office workers who apparently believe they are indispensable and superior to the factory workers. I don't think there's anything wrong with Tesla telling them, "Hey, if our factory workers can show up to work everyday and bust their butts, you office workers, who are generally making more money - doing less work - should not have an issue showing up for work."