descriptivists vs. prescriptivists

Prescriptivists like Simon believe you need prescribed rules to preserve language.

Descriptivists like Sheidlower and other dictionary makers are content to describe language as it changes. 

I think that you need both prescriptivists and descriptivists to have both traditional and new language in the English language. By having prescriptivists it helps to keep the English tradition alive and well known. However, like the narrator said pop culture and hip hop have a huge impact on the language today so English language is naturally going to change regardless of prescriptivists.