Right now, in India, iPhone sales compete with used iPhones. With an option to unbrick phones, what methods are preventing a new market of “Chor-Bazaar for iPhones” (market for stolen iPhones)?
Why is the term "bricked" in the first place?
Because of the utterly dead properties of a brick. The whole point was a visceral image of just how not remotely recoverable under any circumstances, vs merely a little extra effort can recover.
An unformatted empty computer with no os is not a brick in the same way a cd player with no cd inserted is not a brick. It's still fully functional.
The thing the limits the resale/theft value of an iPhone is activation lock - not the ability to reset the device. Resetting or restoring an iPhone does not remove activation lock, and this does not change that.