All of the people I talked to who worked in that industry in that time period and watch the show think it is pretty accurate (sample size: 2). Or as they said "that show seems rediculous, but that is actually how it was. people used to get drunk at work. people used to chain smoke all day. your boss would berate you constantly and the only reward was your paycheck, no one was coddling you"

One could argue that it is inaccurate, but how is it dangerous?