Yes, instead we pay with requiring supercomputers and 10 hour compile times to process billion of those “atomic architecture”.

I’m assuming you’re referring to an async runtime like tokio. In my option the dependency problem exists with or without tokio. Tokio is probably one of the best dependencies

I'm not very familiar with rust but I'm pretty sure it has a runtime. Even C has a runtime.

Unless you're talking about an "environment" eg Node or the like

but it still increases compile time, attack surface area, bandwidth use, etc.