So, in a Python-only org, someone with no Erlang experience decided to ship his first ever server to production, thinking Erlang would be a magic bullet to “scalability issues”. Obviously, there were maintainability issues and the org, blaming the language, decided to switch back to python.

To me, the fact that a novice was able to deploy production code that went on unmaintained for months, running a crucial part of the operation, speaks positively about Erlang.