What I do wonder about it is Swift's plan for things like tiny binaries (no runtime), no standard library, zero-cost (or predictable cost) abstractions...
Rust on the other hand tries to be a system programming language, but with no success at that. And it's not a popular Applications programming language because there's no support from any major software platform vendor.
Swift doesn't have a runtime, a linked library isn't a runtime, if you think it is, then you don't have the qualifications to discuss this.
It is not a problem to store one 50meg file on my 32GB iPhone or 128GB server, it would be in a 32KB microcontroller, but nobody is trying to ship Swift as a language for those.
My understanding is that it's called "the Objective-C runtime". I don't need any qualifications to call it that!
I'm not sure what distinction you're trying to draw.