The real idea is to make the car next to yours without a club more attractive because it can be stolen in less time with less effort.
The club wouldn’t matter in most cases anyway as thieves in that world are often looking for specific models, so if it’s got a club type device but the right model, it’s probably a gonner.
Club type devices might deter kids or amateurs but not those in the biz. Btw, those battery powered portable angle cutters are used in all kinds of crimes, not just auto theft. Very fast, very efficient.