I don't know. I know what you mean though - I don't see it that way at all. I'd be TERRIFIED of messing up someone's hair.
I guess the answer in the end is that most people don't think cosmetology school is very difficult.
The real situation is that if you know all about how to cut hair, and do it well - there is still the matter of the business that needs running. Also, and I'm sure that you know better than I - you have to have your customer's like you, or they don't have you cut their hair.
I know folks that take tremendous amounts of pride in their hair cutting. Those are the folks that do an outstanding job. People can tell how YOU regard your profession, and sometimes they form their perceptions based in parts (larger or greater) from what you had projected in their general direction.
In any case - I need a haircut, and . . . .gosh, you are lots more attractive than the people I sometimes pay for that service. I also think you are smarter than them - . . . . because you seem so tolerant of this message that you've not seen yet.
How bout we just do away with stereotyping any working person as "dumb." I'm all for calling crooks wicked regardless of who their daddy is, and how much money they could offer me to shut up. I think that working is working - and we can't all cut hair, or . . . ."_____" It takes a whole village to run a bigger village. . . .or . . .yeah, something like "nevermind."
Also, I have "beaded hair." I'd never heard of it, but a studious cosmetologist noticed it, and soon the whole family was found to have a predisposition towards "beaded hair." I tried to package some once, but someone told me that it looked about as smart as a box of hair. Imagine the chances involved in such an accurate guess. . . .nevermind, I made that up.
It's bad when you forget what you made up, and what you didn't.
~edits continuous nonsensical comment~