I listed a few examples of emerging languages to clarify that Elixir is not in the same class when it comes to computational performance on a single machine. The performance profile is indeed Erlang-like.
Keep also in mind that my reply was within the context of a thread on Crystal. OP sort of sold Elixir as a fast language that we can use now while we wait for Crystal to mature.
My point is not that Elixir is useless. My point is that we must not oversell Elixir as a fast language. Generally speaking, it isn't. It excels at horizontal scaling, which is great, but I wouldn't call it "fast" without proper qualifiers.
