3D printers have been in the public’s hands for about a decade now. They aren’t exactly new or interesting technology and the use here isn’t particularly novel or interesting.
Most people don’t have the skills required to benefit from owning or operating a 3D printer, so most people don’t have anything to do with them.
They are still an emerging technology, with new applications reported steadily. Still, they are very interesting to most people, because 3D printing is basically wizardry in their eyes.
This use case is definitely novel, it even says so on the article. It may not be interesting to you, but your strong reaction reveals that you are actually angry at the feelings provoked by the article, and it might do you good to take a moment to analyse WHY you are having that kind of emotional reaction.