They dont need to be "taught" to herd.
They only need to be taught of OBEY COMMANDS
Chasing other animals is not herding. Herding is only possible by teaching obedience.
If your premise was correct, ANY breed could be taught to herd as well as any other breed, when that is simply not how things work
The premise is correct. Again, you just prefer to argue with facts. Those breeds used for herding have stronger instincts, in addition to intelligence, desired by people who want to use them for that specific job. That's why they were given the title, Herding Breeds.