I personally disagree, there is little chance that Swift will be as fast as Rust and its runtime precludes it from a whole class of use that Rust has.

Swift also is annoyingly special-cased, with things like Options being special in the language, and if let only working on options (if i understand correctly). Rust took syntax like if let from swift, and then made it general.

Swift also has to deal with Obj-C interop which is not great. I imagine Swift being as popular as Objective-C in terms of non-mobile apps.