The author gave static types and performance as examples of things that matter to them that they clearly don't feel Elixir does as well. It's probable they were

The author gave static types and performance as examples of things that matter to them that they clearly don't feel Elixir does as well. It's probable they weren't the target demographic for Elixir, like many aren't the target demographic for Rust. The initial response made an assumption that all these capabilities matter either way, and that's not true.