As Godkas already said "In the wild, plants are constantly being attacked by insects and animals. I believe that pruning helps promote strong healthy plants and grazing is the way its done in the wild." not to mention huge rain falls, strong winds and so fourth. Plants take a beating outside.
I dont think high times would publish something in an attempt to have you kill your plants, nor do I think this is a debate that will ever be over. Its like the lighting debate, some will always think one way, and others will think the other. I like to cut leaves as I near my harvest date, if lighting is a problem. Which it usually is.
Peace