I love it! So much better than a kid screaming and crying over a haircut. His giggles are so cute and catchy, no wonder the barber was giggling along.
We have a place here that specializes in children's haircuts; they have all sorts of fun chairs like the horse, an airplane, a lions head. Their client limit isn't based on age but rather on when a client is physically too big to safely be in the chairs.
unfortunately my kids were too big when they first opened. That was a bummer because my daughter (who has autism) was not a fan of getting her hair cut (when she was real little we could do it at home, but after age 8/9 years old she wouldn't let us, she went 1- 1 1/2 yrs w/o a haircut because of it). A place like that would have maybe been great for her.
Seeing your post and reading your story, along with my own thoughts and experience got me thinking.
I've never seen or heard of this, and wonder if someone has done it somewhere: Same concept, but custom build some chairs for older children and adults with different abilities that keep them from being in a regular salon chair. Could be profitable, but more important it could be a much needed resource/service for some people.