The "grammar bullies" - you read them in places like the New York Times - and they tell you what is correct.

You must never use "hopefully". "Hopefully, we will be going there on Thursday." That is incorrect and wrong and you are basically an ignorant pig if you say it.

This is judgementalism. The game that is being played there is a game of social class. It has nothing do with the morality of writing and speaking and thinking clearly, of which George Orwell, for instance, talked so well.

To which famous essay of Orwell does the author refer here?