I wouldn't even consider it simple-minded. There's a lot that goes into janitorial work and especially maintenance and there is a lot of ways to hurt yourself. Understanding your PPE, mainly. People really hurt themselves because they don't pay attention or in a lot of the cases, the job doesn't provide the proper PPE for the job. Working with asbestos, glass, fiberglass, lead...all things I have done and taken the extra steps to protect myself against them. Knowing how to use the tools you're using especially as well. Some dumb shit I have done when I was younger that "worked" that make me cringe thinking about it now.

Janitorial work is important in that regard too. You should always wear gloves, mask; check the chemicals you're working with and really try not to breath in power-cleaners when you're working in a row of 30 stalls. Sometimes there really are cases where all you can do is get the air moving; but that does LEAGUES more than just huffing straight chemicals in a porcelain and tile room.