Which is why it's one of the hardest languages to learn, there wasn't even a noble population who were helping rules be set logically, it's a slang language.

Which languages had nobles changing the rules of the language to be logical, and beat the peasantry until they repeated their absurd shibboleths?

Proscriptivists have existed in many languages, English included. They've basically always been tilting at windmills.

Governments tend to be most effective at killing languages wholesale, rather than systemically changing grammar. And it's something that's been far more effective in the past couple hundred years as part of nation- building projects. E.g. the efforts of France, Italy and Spain to squash minority languages like Occitan, Galician or Neapolitan.