It's not a question of ownership. It's a question of warranty. He still owns his (now-bricked) phone.
In this case, the dude dropped his phone, gets it repaired at some no-name shop with dodgy parts, then complains when the security loophole the dodgy parts used got closed. If anything, the fault lies with the shop that did the repair.
Hell, Apple told him they'd do out-of-warranty replacement for it (not sure what that costs, but likely still less than full price), and that's because the problems began when he dropped it (which is not covered under warranty anyway, though some 3rd-party sellers do offer such warranty protection for a nominal fee).
Fair warning: If I bought anything from any other OEM and went through the same rigamarole, I'm certain that I'd get the same (or worse) treatment from the OEM... so this isn't just an Apple thing.
(...and this boys and girls, is why I buy just-behind-bleeding-edge Android stuff, so a total loss of the phone is only like $200, not $600 or more).