Not OP, but the concurrency model is similar to Go with its use of channels. At the moment the runtime is single-core, but the chosen model should permit multi-core (when they enable it by default) with little to no changes to user source.

Tbh, I prefer it that way round than try to retrofit multi-core onto a model that wasn't designed for it. But yes, single-core feels a bit behind the curve in 2022.