But that's teaching a new generation of coders a set of tools designed only for Apple. Ruby (Python etc) are open and easily available on other platforms, Swift may be in the future but it isn't now.
https://swiftreviewer.com/2018/12/21/swift-programming-on-ra...
Maybe not the best language for someone new but its widely available.
You can run almost any language from a web browser these days:
A lot of educational sites offer embedded interpreters like this.
It has never been easier to start to learn programming. The real challenge nowadays is maintaining attention...