The main benefit of this is speed having the entire app local it makes it really fast. As we continue to develop the app, we'll build in more desktop options and features.
Plus its easier to launch and switch to when its an app in your dock instead of just a tab in your browser.
If every website I visited refused to be in a tab and instead required its own place on my launcher... well, my desktop would be about as useless as my smartphone launcher. 100 applications spread across 8 separate pages, who knows what's open, annoying and time consuming to organize...
I really love tabs.
Are we really killing them now? Sucks to be anyone who isn't Facebook, because 98% of websites aren't going to make the "put it on the dock" cut, and will just be ignored.
Thank's god it's just ONE client for ONE specific app then. Which you can STILL use through a browser.
KWin used to allow title-bar level tabs but it didn't work in a lot of clients that expected to have complete control of the frame.
Separate windows are not the only way.
That's not available in Chrome without extensions, as far as I know anyway.