a useless low-browed primitive skill

I'm doing some research on large format stereographs for an art project. I encountered this wonderful quote from a person who thinks you should only use a machine to view them, rather than crossing your eyes to view the middle, stereo image.

"This is called "free viewing." It's a useless low-browed primitive skill."

wow. gues he really don't like it. I wonder why?

oh:

"I don't happen to have it myself."