I mean, I'm pretty sure most of those companies would view APL as a liability, just like companies that still use COBOL. The question really is about whether ne

I mean, I'm pretty sure most of those companies would view APL as a liability, just like companies that still use COBOL. The question really is about whether new, significant projects are being started in these language. People choose weird, novel, old, and esoteric languages for Advent of Code because it's fun and a way to stand out from the pack, or practice languages that might not ever get used otherwise. It's not evidence of a healthy community. And yeah, I mean Elm and Purescript might not be "dead", but the fact that they are niche, largely non-general-purpose languages doesn't really mean that they are "healthy" either. I'd be willing to take a bet that both of these languages are effectively dead in 10 years.