Have you ever worked in a kitchen or are you just assuming?

I personally haven't worked in a restaurant, but I see how the staff and chefs are always running around, doing 20 things at once. Stimulants use like cocaine and amphetamine is endemic in the industry as well, probably for that reason.

As a restaurant worker, the pay is usually terrible as well. So while some super rich corporation won't lose millions off of your mistakes, you can lose your job and be forced to live off of your inexistent savings. That sounds very stressful to me.

Your assessment for what constitutes stress seems to be, at best, highly subjective.