I think dewey is asking about the articles linked from HN, not HN itself. The post implies that when you click on an article from NYT/NPR/etc, it shows the content inside the app (since there's a separate button to open it in Safari), doesn't it?
It might not be a desirable behavior for some users but it shouldn't be forbidden… The client I'm using also leaves the choice of opening within the app or going through the native browser.
