That stuff in the video is ok, as long as one understands all we can really do is make it HARDER to steal our bikes. If a thief has to choose between a bike with a disk lock, and one without, he may choose the non-disc locked bike because it's one less thing he's got to defeat to wheel it away. Of course if he's got some dirt-bag buddies and a pick up, the disk lock is mostly moot.
Years ago I read an article in a British M/C magazine where a group of guys, who had all had bikes stolen and were tired of the authorities not giving them the relief they needed, took matters into their own hands. The article claimed that these guys would set a bike out as bait, and when a would be thief came to steal it, they would grab said jerkus, throw him in their van, and drive him around for awhile as they beat the holy crap out of the guy. Then they'd just dump him out somewhere (probably near a hospital) and call it a night. Was probably a made-up story, but I must admit the idea has some (small) appeal.