There is a lot of great tech behind Swift and LLVM. I really enjoyed learning a bit (no pun intended) of Rust a few years ago, but it didn't stick for what I need. I really like Swift, but I have only done one SwiftUI app, all the Swift stuff I do is on the command line with swift build/test/run with a light weight editor. Apple's pre-trained deep learning models are very useful, and an edit/build/run iteration is just a second or two.

I wish Rust had been around 30 years ago when I loved doing low level programming. Between my C++ books and gigs, C++ was good financially but Rust is just better (apologies to people who love C++).