It was developer experience that precipitated this fallout, a language usually needs to be growing in user base for the developer experience to improve as people complain and tackle problems they encounter.

The old linked thread had some prominent figure saying “but just do <inconvenient thing>” in response to every issue, if the language isn’t growing, only people accustomed to the inconveniences stick around.

So, I’d say it used to be Clojure, but now I doubt there is one.