Also didn't downvote personally, but I can certainly see why someone would.
Fundamentally, the problem exposed by this particular piece of malware was the ability for it to persist across removals and device resets, not that it was "sideload-able" by the user. Malware persistence should not be possible on a well-designed system, especially one where applications are generally untrusted and sandboxed. Had this been malware that requires sideloading but could be removed when noticed, it wouldn't even have made the headlines at all.
The problem with making the walled-garden argument here is like saying nobody will get sick if we just put everyone in isolation all the time. Like, sure, it is _a_ solution, and assuming the isolation is perfect, it _does_ achieve the goal... But this merely sidesteps the problem, and anything that slips through the wall (which as pointed out by other commenters, does happen on iOS too) will be just as dangerous as before.
The real solution is to "buff up everyone's immune system" and make it easy to restrict and treat malware apps when they inevitably end up on a device, walled garden or not.
Fundamentally, the problem exposed by this particular piece of malware was the ability for it to persist across removals and device resets, not that it was "sideload-able" by the user. Malware persistence should not be possible on a well-designed system, especially one where applications are generally untrusted and sandboxed. Had this been malware that requires sideloading but could be removed when noticed, it wouldn't even have made the headlines at all.
The problem with making the walled-garden argument here is like saying nobody will get sick if we just put everyone in isolation all the time. Like, sure, it is _a_ solution, and assuming the isolation is perfect, it _does_ achieve the goal... But this merely sidesteps the problem, and anything that slips through the wall (which as pointed out by other commenters, does happen on iOS too) will be just as dangerous as before.
The real solution is to "buff up everyone's immune system" and make it easy to restrict and treat malware apps when they inevitably end up on a device, walled garden or not.