Stunted snakes are real no doubt about it. I have seen a main land Retic male 4 years old and a whooping 5.5-6 feet.
I have seen 8 foot 6 year old female Burmese.
With "dwarf" Retics and Burms on the market hot and heavy, stunting normal snakes and selling them as adult dwarfs for more money has become popular.