When I go into an Apple Store, I SHOW them my phone. I've got nothing to hide. It's my phone. I can legally do what I want with it, and if a piece of hardware that I didn't modify breaks (under warranty), they have an obligation to fix it. If I mess with the software and it breaks, my issue. I can put bigger wheels and tires on my car and if it messes up the suspension it is my fault. I can overclock my iMac and if the HD fails, my fault. I take the responsibility for what I do. But to tell me I can't put a transparent status bar on my phone, or replace the ugly slider with a tap to unlock theme, buzz off. They don't have that right. If I mess up my phone, they can try to refuse to fix it (by saying my mods led to the failure). But they have no legal right to say I can't do it. And if a port breaks, it's pretty clear that's a hardware issue that they need to fix. A GUI mod does not cause hardware failure.
I look at Apple's statement of use (you buy it, but we still control it) as legal crap. If you go to a ball game, your ticket says you relinquish all legal rights to your safety if hurt. BS. If you park you car in a car lot downtown, the ticket they give you says they are not responsible for theft or damage. BS. That's why we can hire lawyers, who poke holes in those arguments. Apple can say it, but it has no legal bearing.
So when someone says I can't change the way my phone looks or sounds, I know it's got no legal bearing. A phone is not sacrosanct. It's a phone, a piece of merchandise. I buy it, it's mine. If I personalize it, I am within my rights to do so.