Even Samsung provides updates if the problem is serious. And even being up to date doesnt mean you are in secure...
I assume you meant secure? At any rate no, it doesn't mean you're invulnerable, but clearly it's mandatory in 2014. Maybe not in 1994, but today it is. Saying "well there are other dangers regardless!" is true but irrelevant. You're intentionally putting yourself at extreme risk with internet facing outdated software.
As for avoiding Android-not necessary at the moment. The nexus line exists. Nvidia's stuff is probably going to be kept up to date. Those Google Play edition devices might be okay (not sure how they've been and they just launched). The Moto X has been good but don't know how that'll go now that the Lenovo (blarg) bought them.
Regarding that last link, those claims were pretty nonsensical. They were undocumented stuff in iOS that doesn't affect security at all so far as anyone knows. It's for your PC to communicate with the iOS device, only if you've given it permission. That Apple didn't disclose every single way that's happening just means it's closed, not that it's inherently insecure.
I know Apple doesn't patch stuff nearly fast enough, but neither does Google (and then not if you're running some Samsung or the like like most people are) and neither does Microsoft on Windows Phone (though obviously Windows proper is kept up to date well).
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Thanks for the joke.
Yes. Security is a big joke.