Only if we assume your initial premise. How about this one? The average consumer is never going to try to hack their phone unless someone more knowledgable than them provides the instructions and resources necessary to do it. In other words, average consumer using the phone will never, ever, ever have a bricked phone because of some sort of anti-tampering device.

Motorola wishes to sell a device with a certain set of supported functionality. They do not wish to invest effort in dealing with hacked versions of their devices, and in fact they seem to have contracts with carriers that require them to protect the devices.

Motorola sells you a device that does exactly what they say it does. If you don't like the feature-set of this device, then don't buy it -- Motorola is not required to sell you an open platform and you't not required to buy their closed one.