You're misreading me: I'm saying that English didn't come into existence by fiat, and that it doesn't evolve through fiat most of the time. English, being a natural language as opposed to a constructed one, evolves naturally.
> Well I do. People reference so-called "descriptive" dictionaries and grammars, yet don't those texts themselves inherently acquire a prescriptive force, insofar as they originate at elite institutions like Oxford and Cambridge and UChicago?
That doesn't change the fact they're descriptive. It also doesn't change the fact linguistics is descriptive.
> I think descriptivism is an incredibly naive position to take when talking about modern languages that have agglomerated for explicit social, political, and economic projects, and I think that was Orwell's point.
Well, you can get a degree in linguistics and learn what "descriptivism" actually means, then, because you certainly don't know it now.