reasonML / reasonML + bucklescript amount to about 25%, it's been out for 4 years while CAML was out for 30+.
Yet the wording makes it sound like it's disappointing "used by only 25%", "maybe the survey was not advertized enough in the Reason community".
Actually, the fact that someone can show up with a transpiler that makes the language curly braces friendly and get 25% market share just like that is just puzzling.