Not 100% Convinced
My experience of iOS 5, for what it's worth, is that it's pretty damned stable (for me). With a notable exception of BBC iPlayer, which would crash on start-up on about 25% of occasions. That particular app was updated recently and the release notes acknowledge that it includes a fix for crash-on-startup. I wonder how many millions of recorded crashes were accounted for by this one hugely popular app?
My experience of Android, for what it's worth, is that it's also pretty damned stable. Unless you are one of the mindless numpties who gets clever and thinks it's a good idea to install a Task Killer on the device. In which case you don't understand how Android works, and you are simply begging for your device to crap out on you.
I am a little intrigued by the stats in the article, though. The trend seems to imply that it won't be very long before every app launch results in a crash (look at the way the graph is headed), and all that Android is doing is better keeping pace with iOS in this regard. Such convergence looks a little suspicious to me.