I strongly disagree with your opinion. For economic reason, i'm using (and supporting many users from my neighborhood of) second-hand hardware. Some systems like Apple's make our life incredibly difficult and most times people will just have to pay a shady phone store to have the device they purchased unlocked, adding 20-30€ to the bill.

It's important to note that most people are incredibly gullible when it comes to technology, and they won't hesitate to buy a second-hand iPhone (whether stolen or not) for a few bucks assuming they'll be able to use it, because that's what a phone does, only to find themselves trapped in iCloud lock.

Locking devices does not protect users (contrary to encrypting the local storage), and does not deter anyone from stealing. It simply adds one layer of mafia to deal with (iCloud unlock shady companies) when you're just trying to find a second-hand phone.