Apple barely invest in their own platform, they sure as hell aren’t going to invest the resources required to do this. Flutter on the other hand… genuinely does a great job of cross platform and I’d argue Dart is a nicer language too.
Yes, but Dart is only a single-threaded application language, while Swift can be a proper systems language, something between C++ and Rust, in terms of usability and safety. Golang killer, when it comes to high-level systems programming.