I love it when ideas that have absolutely no chance of adoption get fully thought through anyway. Esperanto is a similar idea for language - too moonshotty, but complete.
Esperanto has actually been criticized for being half baked. There’s this whole website on the subject from a respected expert. In particular it’s really eurocentric.
Rants about Esperanto aren't terribly different from the similar rants one finds about programming languages -- that Go, or Java, or Rust are poorly designed according to whatever criterion the author thinks a language should have. People can agree or disagree with them, but there isn't really an objective way to validate taste in languages whether human or programming.
Esperanto actually is used more than the majority of natural languages on Earth -- there's new books and magazines published in it every year. Yes, it seems like a tiny language compared to English or Chinese, but compared to most Amerind or Paupan languages it's not that tiny.