I feel like this is the result of trying to retrofit concurrency onto a language with a huge baggage (mostly mandated by the company developing it). You either

I feel like this is the result of trying to retrofit concurrency onto a language with a huge baggage (mostly mandated by the company developing it). You either make all the decisions from the start, and build on top of them (see Erlang for an example), or you spend years trying to bolt concurrency (of any form) on top (see OCaml for an example)