The masters spent years studying in ateliers and studios and mastered drawing from life.
Vermeer was funded to attend a Guild school and had to master drawing methods in order to move on to complex painting techniques. It would have been faster, easier and less effort for Vermeer to draw from life than to use this technique.
Gregg Kreutz Answers David Hockney – Richards, Kirk
http://www.kirkrichards.com/Gregg_Kreutz_article.htm
The line in a Warhol drawing resembles a line in an Ingres drawing. .... people, Hockney now must drag herds of previously innocent old masters into his… Its simply bad logic. ... Still, Hockney has no evidence that artists used these lenses.
A Return to the Hockney-Falco Thesis
by Miles Mathis
http://mileswmathis.com/hock2.html
“Do you know how a man makes his way in the world? Either by the splendor of genius or theadroitness of corruption. He must burst like a cannonball into the ranks of his fellow men,
or he must glide in among them like the pestilence.—Balzac”
Hockney faked his art school degree as well. He is not a respected academic source
“Despite the fact that a large part of the artistic community and the scientific community found the thesis ludicrous and offensive, it was almost immediately worked into the syllabi of art and art history classes at all levels, including the undergraduate and graduate levels at university. Students in many courses all over the world are now taught this thesis as fact. This was achieved mainly through Hockney’s stature and name recognition in the avant garde. As Tom Wolfe pointed out many years ago, the inner circles of art moderne are quite small and clubby, cultish even. Facts have never been of primary concern in this circle, and the coursework, like the propaganda, can be tweeked to include almost anything, the more absurd the better. ”