This guy's opinion of course omits the huge problems of walled gardens, dickwad Apple rules, closed platforms, 30% royalty absurdity, and the archaic development process of native apps.
Sandofsky works at Twitter BTW.
You are probably right about most of the problems, though how much of a problem they really are is related to where you place yourself on a purist-pragmatic continuum.
Sandofsky explicitly mentions development: "Today, for high level work, I am as productive using Objective-C as JavaScript." That's my experience as well.