So different language used for different contexts basically?
Pretty much.
Just because a variety is improper when compared to SAE, it doesn't mean it is inappropriate right? Because non-standard varieties (NSV's) create a
dichotomy in terms of in-group members and the excluded world (for example gamers using acronyms such as GGWP) which in turn
develops social rapport between the participants (the use of GGWP moulds a mutual bond) . In building social rapport,
covert prestige is created in order to distinguish members of the NSV as the interlocutors can relate on a linguistic level. Due to this linguistic variety, which descriptivists are fond of, NSV's
facilitate eased communication and proficiency in expression - heavily dependent on the social context.
You could really make that^ into 4 strong paragraphs.