A few years ago at my office about a dozen laptops were stolen. About half of them were locked up with those locks. All of the locks were still connected to the desks and in the locked position. The thief just pulled really hard or something. I think the problem is that laptops just have a plastic hole which bends, tears, or cracks easily. I'm not sure a stamped hole in sheet metal would be much better.
The thief, who turned out to be our security guard, was caught on video loading his car with the laptops. As our security guard, he was aware of the video camera. I really have no words for this stupidity.