Incredible. Been using this stack for an year and I'm super excited for the future. Lately I also do see multiple new companies picking it up for different workflows and applications.
Though it may not reach Ruby levels of popularity, it's still just fine. Learning curve is favorable, performance is stellar, and the toolkit that comes with the language is quite featureful. I see other languages borrowing elements from Elixir - especially LiveView and Pattern Matching.
The only hiccups I faced where when I had to roll out my own solutions for a few things (a background job processor, error manager, a mocking module for unit tests, etc.) Even with all this, I'd still say Elixir is worth it, given the performance gain and the patterns it enforces. It all just makes the code easy and understandable.
That said, HN readers from outside the Elixir should know there are great libraries for all of those use cases. Point in case is background job processors—we have plenty of options, though I’m especially fond of Oban[0] (full disclosure, I’m the author).