Why would you bother using Swift if you're not targeting Apple? I can imagine wanting to use it for something cross-platform that is primarily an ios/macos thing.

But if you don't want to include those I wouldn't pick a language that's under control of a company I don't use.

It's a bit like using c# or powershell on Linux. Yes it can be done and it's helpful for cross platform with windows but I wouldn't consider it a first class citizen.