Of course, but the point of the article is that blanks for high security locks used to be much harder to come by. Now, software and 3-D printers make it easier to defeat the feature that makes them "high security". The implication is that pretty much anybody can do it now.

I remember reading several years ago about how one can take a picture of a key from far away and use that image to replicate the key. Back then, replicating keys from a picture was not something just anybody could do, so it wasn't a threat worth fretting about. Presumably 3-D printing will make that easier too. One can even imagine an app: point your phone, press a button, and get a key in the mail a few days later. I expect we'll see that article soon.

For some locks, that's true. Other lock companies use copyright to do key control. Your not going to find blanks for many of the kinds of keys this promises to print.