There's no need to "psychoanalyse" the field to find out why people repeat (with variations -- which is an important detail) the Milgram experiments; (nearly) all research papers contain clear statements about their motivations.

Certainly, you can see those explanations and disagree with them, but the author makes no mention of them, nor does he even link to the papers. Heck, he doesn't even link to popular press writeups of them, which is usually maddening enough!