As someone who who's a polygot programmer, I've always agreed with this in theory; however, the biggest challenge I've found in giving Elixir a shot is that, well the job market doesn't seem to favor ANY elixir jobs out there...especially for someone who's only made 'toy' apps in Phoenix. And for prototyping apps, I'm just faster in Ruby/Rails to make it worth it PLUS if you want to debug ML/LLM scripts you have to know Python anyways.

Any recommendations for someone looking to break into the Elixir space in a serious (job-related/production app) way?

There are quite a few Elixir shops that are willing to hire people who don't have a ton of experience with Elixir but have experience building and understanding systems generally.

So my advice is, try to bolster your story that you can design and build systems (regardless of language), learn what is needed to get the job done, and _communicate_ your knowledge of those systems to people. Good teams will recognize this regardless of prior specific tech.

Source: I've been on hiring panels at multiple companies that used Elixir extensively and the factors that led to us making offers to candidates were rarely their preexisting Elixir experience.