Sorry Azizi but that's a sweeping statement if ever I heard one. I was one of those who posted in this thread, and I know NOTHING about the history of Barbershop, but I assume from your post it is not to your liking.
It is open to you to enlighten those of us who know nothing about it, rather to snipe at those you assume DO know the history.
On the other hand I think the thread is about barbershop as an art form and not as an object lesson.
Giok