The existence of a committee, even an influential one, for a language does not mean that that committee actually controls that language. In the end, it's always the people who use a language that control it, not just in theory, but also in practice, as evidenced by how many of the Académie Française's proposals for pure French equivalents to English loanwords have failed to supplant the latter. These committees also tend to only concern themselves with low hanging fruit that is easy to point at, such as vocabulary, grammar, and spelling (which is technically speaking external to a language rather than part of it), while barely if at all targeting anything that would require more than an elementary-school-level understanding of language, such as phonetics/phonology, so their commentary also rarely even covers all aspects of the language.
https://en.m.wikipedia.org/wiki/Acad%C3%A9mie_Fran%C3%A7aise