I'll admit, I didn't read the article thoroughly. I see your point now (I tend to automatically equate psychologists to liberal apologists). Still, since we live in society not sensible enough bar pedophiles from ever re-entering it, I see castration as a better option than the slap on the wrist prison sentence and "counseling" they usually receive.
I tend to equate them to their insane patients. Having known a few psychologists and psychiatrists who were themselves complete neurotics, I think the "profession" attracts that type, and I would tend to extend the same logic to those who specialize in deviant sexual behavior.