For a long time C++ and Javascript did not have futures. Rust is relatively new, and futures aren't part of the language proper yet. The problem is that the author's criticism of Rust seems to all hinge around a bleeding edge feature.

I would agree with the author's criticism if it was "futures are in the lang nursery and still not ready to use," rather than: Rust is bad, because I got nasty errors when using this work-in-progress library.