Not sure where you are coming from. If you actually support different architectural styles in the language, like in Objective-S, then you don’t have to resort

Not sure where you are coming from. If you actually support different architectural styles in the language, like in Objective-S, then you don’t have to resort to the kinds of hackish implementations that were necessary, but at least possible and reasonably easy in Objective-C. And that are still necessary, but much more difficult in Swift, because it (rightly) tries to restrict hackish things, but (wrongly) still doesn’t support other needed architectural styles.