But alas, I've never considered any theology to be meaningful. In fact, I dislike the word itself, because it is not an apt description of what it pretends to be. Gods are generally thought to be transcendent and ineffable -- thus you can't "study" them at all. What theology actually does (and the proof of this is that every religion has its own theology and all are different) is to study what some humans THINK ABOUT God. Different thing altogether.
I read your article, but found it stretched credulity. After all, male circumcision has been around since before Abraham, and in places Abraham would never have known existed.
Its history of migration and evolution of the practice in multiple cultures and regions. South and east of the Mediterranean, it seems to have begun in Sudan and Ethiopia, and then was picked up the ancient Egyptian, early Semites, and only then be Jews (and of course much later, Muslims). In Oceania, circumcision is practiced by Australian Aborigines, and Polynesians, and there is some evidence of practice among Aztec and Mayan civilizations in the Americas.
The earliest historical record of circumcision comes from Egypt, in the form of an image of the circumcision of an adult carved into the tomb of Ankh-Mahor at Saqqara (c. 2400–2300 BCE).