Agree with the quality level but there are other languages where that is also the case: Erlang for example is probably one of those languages.

> Elixir's relationship to Ruby is pretty overstated

Perhaps I am actually am over thinking this. Elixir has probably diverged enough from Ruby (e.g. defmodule, pipe operators, :atom syntax) for LLMs to notice the difference between the two. But it does open the question, though, how does an LLM actually recognise the difference in code blocks in its training data.

There are probably many more programming languages where similarities exist.