Earlier quoted context omitted.
In the video we see many people stealing from porches with video cameras, and the author mentions that the police didn't take action even with video evidence. While I think your suggestion would reduce the chance of theft, I think you overestimate the accuracy of the risk-benefit analysis happening in the thieves' minds, as well as the actual risk involved. I mean, the activity is already dumb from a risk analysis po…
Problem is that some package thieves just trail behind the delivery truck. So even if hidden, they know it's there.
If they trail too closely, they'll make the deliveryman suspicious.