I think the biggest problem here is that iOS/Android WebViews are incredibly sensitive to memory and CPU, and if you just take an otherwise amazing desktop or backend developer and throw them in mobile webview, you're setting them up for failure.
The webview is a whole different ball of wax (my last gig was PhoneGap development on iOS and Android) and if you are not, from day one, incredibly focused on performance (CPU and Memory) you're gonna have a bad time.
Knowing what I know about making PhoneGap apps, there's nothing inherent in what FB is doing that the WebView is incapable of doing. It's just really hard to get it right, much harder than a native app.
The webview is a whole different ball of wax (my last gig was PhoneGap development on iOS and Android) and if you are not, from day one, incredibly focused on performance (CPU and Memory) you're gonna have a bad time.
Knowing what I know about making PhoneGap apps, there's nothing inherent in what FB is doing that the WebView is incapable of doing. It's just really hard to get it right, much harder than a native app.