> that will be the end of Go and Rust

Will it? I don't think so, although I think Swift is great. IMHO Rust targets another market compared to Swift. Rust feels more low-level, e.g. Swift uses Reference Counting for everything. Swift also can't give you some of the nice guarantees you get in Rust.

Go also has some nice stuff compared to Swift: simplicity, goroutines or tracing GC. Go is also already widely used.

Swift is certainly great for Mac/iOS-Development, but I am somewhat skeptical for other platforms. I am afraid that non-apple-platforms will always feel a bit like second-class. It's just not Apple's main priority and most Swift-devs will always be paid by Apple. But who knows, I may be wrong.