winnie:
Some say it is a common practice in their area and some say the short piece keep the strands intact, but I agree with you!
I never did, nor was I ever taught to terminate the conductors as suggested.
I doubt that there are any recognized trade publications that would show that method to those who are learning about the installation practices by electricians.
I could be wrong and if so I would like to see the pages whaer they show this method as being acceptable.