The article is a bit misleading.
This method (of freezing locks to shatter them) has been known about for decades.
The misleading part is that you can't do it with just one hand-held can of anything... When I have heard of this is, at construction sites thieves would look for BIG welding tanks full of nitrogen or oxygen, and use that to freeze locks on equipment trailers to break into them. They would have to blow off most of a full tank (a ~2000-3000 PSI tank that stands ~5-feet tall and weighs ~120 lbs) to chill one lock enough to shatter it easily.
What's much more likely today is somebody just cutting the lock with a battery-powered cutoff tool.