First of all, Erlang/Elixir/etc - cool technology, for sure!

But the vision of the future is described wrong in my opinion.

Imagine composite materials were invented 130 years ago. So now you are saying, that horse carriages future is definitely fiber plastic, because it's lighter and thus more can be loaded on top. Plus, horsesharing app will be popular. And that horses will be fed by a robot while owners dine at MacDonalds.

It may well happen, that we shall see much higher level tools and even AI-assisted ones, where all those nice things will be at the level of "assembler" or "C" is now.

The "laws" of development of technical system (TRIZ anyone?) say that over time technology develops towards being magic, growing necessary sub- and supersystems. It can be seen with the computing hardware (from first microprocessor chipsets to today's systems of datacenters as what Amazon has).

Thus, the next question is, which kind of technology lends itself easier as an assembler for the higher level tools? Here there can be many debates, and functional approach is quite strong.

As for the human-level, it's still those objects or frames or classes - whatever you call them - even if developers will describe what they want to build as a story to some AI.