Plus I can be really pithy here and just say "If you want control over your phone, buy an Android" but I think people might take that the wrong way. Still that is the real key difference between the two platforms. On iOS you must assume Apple knows best and defer to them. On a plain Android then it's up to you what you do, but you can't trust things as much as with Apple.
1) that's a VERY good point you're making
2) LOL @ 'buy Android for control' . I certainly laughed, and don't 'take it the wrong way'. In fact, it's also true as far as I know.
3) one thing though, after the release of iOS7 (Wednesday I believe) one was able to downgrade again to iOS6 until the following Saturday. So for a few days they allowed it, and is therefore 'technically possible and 'in place'. They simply removed the signing of iOS6 for all devices that are able to run iOS7. That part, being able to do but disabled after a few days is actually my gripe. But you make a very good counter point which I will happily forward to my friend. (he'll probably tell me it's strange that he can restore an iPhone backup but that it won't downgrade it back to iOS6)