Even if it's the same (faster horse?) I would rather use Rust for the fact it's development is not tied to a big tech company which could abandon it if they liked. Yes it could continue on as a fork but it's development velocity would suffer.

If we're going to be concerned about any language languishing due to a lack of support... like, I don't think people are going to put "Apple dropping support" as anywhere near their shortlist. Rust has a higher risk of losing support.

Apple was the primary and only major sponsor of Objective-C, used it as the core foundation of their entire platform, and dropped it like a stone with little warning or ceremony. Yes, being tied so closely to Apple is an existential risk for Swift. One need only look at the quality and trajectory of MacOS to see that Apple isn't a software company, let alone a company that cares about developer experience (Xcode, anyone?). As far as modern Apple is concerned, the primary benefit of Swift is that it produces a tiny bit extra lock-in for iOS apps, by making cross-platform development more difficult.

Such bullshit, macOS is the best OS for power users.