I was specifically disputing the claims that Chrome Apps are "one of the best things that happened to Linux desktops in a long time" and that they're noticeably more secure.

Taking Soundcloud as an example, Clementine (and probably most media players) can stream it just fine. Having a Chrome App is nice, but it isn't providing anything that isn't already available. I'd even say the Chrome App is a step backwards, because with Clementine I don't need a separate app for every music service.