Paul, this is not about purist thinking. It is trying to tell the newby that he does not need all that stuff in order to become a good machinist. Quicker, more proficient, able to tackle a wider range of materials - Yes. But they do little nothing to promote education process.
Years ago, it was a common lament among shutterbugs that they needed a better camera. Little did they realize that Ansel Adams could take a better photo using a pinhole camera than they could with $2000 Nikon. As others have noted, THAT is what this is about.
Bill