Is that really? I know in Quebec it’s the government that decides what is thought in school and the French they use is definitely diverging from outdated académie française. Not sure about France
I Quebec maybe, because it is a different language (Canadian French) and they can decide what they want (though since they are fine with the Queen bing their ruler, I do not see reasons fro the French Academy not to be the source of wisdom when it comes to French /s)
The french that kids learn at school is different than the french they speak with their family[1] of the french they speak with their friends[2]. People adapt based on contexts.
I don't think it makes a huge difference on how the language evolve, as ultimately the French Academy cannot force french people to speak one way or another.
The only big effect it has is it brings additional hurdles for kids coming from another french speaking country when their country of origin has largely adopted simplified grammar and conjugations.
[1] regional expressions with sometimes a simplified/modified grammar on those
[2] use of slang + verlan (reversing some words) + adoption of some arabic words
