They say that if you love your job, you'll never work a day in your life. This freight handler at Guangzhou Airport would like to know who 'they' are, so he can lob boxes at their smug, stupid faces.
Admittedly, this doesn't look like the best job in the world but some small, cursory effort seems like it might make things easier. C'mon buddy. You're actually doing more work by trying to do no work at all.
If it's any consolation though, you're not alone in your cultivated incompetence. The world is resplendent with the end results of other minimal efforts like yours.