What seems a bit out of place is framing occupational licensing (meant to increase consumer safety) and codes enforcement (meant to increase public safety) as some kind of war on the poor. The fact that some things cost money is not in and of itself a negative or evil thing.
There are safety and sanitations concerns a hair stylist must take into consideration, and they are expected to understand how to properly use chemical treatments in both styling and sanitation.
There was a time where getting a scratch from an unsanitized blade meant an infection that could kill you.
Still could. It's unlikely to kill you from an acute bacterial infection as would have been common before, but there are still plenty of deadly blood-borne infectious diseases out there. Wouldn't want to go for a haircut and come home with hepatitis.
what if such certification could take place voluntarily and customers would select a place to get service based on their needs. If they want to safeguard themselves, they would look for certification?