This goes for manufacturers as well.
Except Google is doing the exact opposite. The Nexus 5 is the best off-contract phone out there hands down AND comes with an unlockable bootloader.
Google made the N5 and other kitkat devices more secure out of the box with this change AND continues to let you go nuts with your own hardware, best of both worlds.
Of the last two, you'll get no argument from me, but I would argue this is not "anti-consumer". Consumers do not care about the things developers and hackers care about. All the exploits allow for disabling security procedures that can be activated over the air.
A consumer wants a non-hackable phone, so if it lost they can lock, track, and erase it.
Does this mean we cannot have both ownership and security? No, but Google doesn't look like they are interested in that.