My experience with elixir, as a scrub who spends every day at work writing javascript, is pretty in line with that. The language forces you to work that way, and you spend half your time just architecting your supervision tree. But the language itself is so easy to write business logic in that it takes half as long as it would in another language. So it works out to the same total time investment but the return is so much higher cause your program is better and more predictable and has scaling for free.