Ok I was a bit wrong in my understanding of the issue. If you read the article it says that you wipe the Mac and then it twitters unlocking at the next setup. Big corps are wiping them and selling them off in large batches.

When the refurbishing company gets them and tries to set them up they’re unable to get past that step.

Even a step beyond that I prefer that hard drives are totally destroyed depending on what the device was used for.