Well, in defense of hair stylists, they have to keep up with a lot of of chemicals and also be on the alert for skin conditions, and other signs of health problems show up in the hair and or skin and nails.
Also, the 2000 training is not just covering wielding a pair of scissors. Again, chemicals, techniques, hair types, etc.
If you want to look like crap, get your neighbor to cut your hair.
In every job, there is always a lot more than meets the eye.
You may not agree with that, but there it is.