Can correlation be assumed without sources and facts as was done in the article?
"Not all engineers are [figurative] robots" is certainly a fact and was meant as an upper bound on the number of engineers who believe that photography is merely technical in nature. I'm questioning whether the lower bound is statable as "generally engineers believe this", and claiming that I don't believe it is.
To further clarify my opinion: the line drawn by the author is too black and white. Its inhuman and unemotional itself to assume that another large group of humans can't see the emotional and human side of art.