Well, Apple can do whatever they want, with any language they want, better or worse, and they can still force developers to change to the latest thing. If they

Well, Apple can do whatever they want, with any language they want, better or worse, and they can still force developers to change to the latest thing. If they say that you can develop for iOS 11 only with Swift 4, not Swift 3< or Objective-C, everybody will have to switch to Swift 4, or else they won't be able to develop to iOS 11. Even though I also think that Swift is better than Objective-C, and getting better in each version, is not really comparable with Ruby/Python/etc.