It definitely is vibe-coded, but yogthos is a competent programmer who has been working on public Clojure projects and repos since 2009, and has maintained a large Clojure framework since well before LLMs were a thing.

I don't think "2k commits in 2 months" is enough to dismiss as slop when it's being developed by a competent Clojure dev.

Competent or not, slop is still slop. The website in particular uses the exact same copy-paste layout/style produced by LLMs and used by pretty much every slop project out there.

One very quick "slop or not?" test is to see if em dashes are used in the source code where they literally never make sense. It's not a great test, but it's one that consistently turns out to be good enough. The results should speak for themselves: https://github.com/search?q=repo%3Ajolt-lang%2Fjolt+%E2%80%9...