Conspiracy theories? How can it be a conspiracy theory when the authors admit as much? I am only confirming that I believe it is true. The practice of circumcision resurfaced in recent history as a way to reduce sexual pleasure, to promote more "virtuous" behavior in men.
The practice was picked up here in the United States during the industrial revolution, during a period of religious mania. It was touted as a cure for the sin of masturbation. This history is all well documented, and I can upload all the research I have done into it if you'd like. Not only was circumcision prescribed for males, but it was also prescribed for females, to treat masturbation and the insanity that masturbation caused. There were a great many documents produced during this era, detailing it. There were also devices created to treat masturbation, such as dick collars that had sharp spikes on the inner circumphrence, to keep our sinful hands off our sinful peckers. Other wonderful procedures were created at this time as well, such as burning off the female clitoris with caustic fluids and stuff like that.
Circumcision has continued to flourish from that time because 1) it leaves the penis functional, if not in optimal condition 2) it makes alot of money for the practitioners and 3) our Judeo-Christian heritage makes it seem acceptable (i.e. "It's a tradition.")