“Why would one be purposely hoodwinked?”
It depends on one’s definition of hoodwinked. If you believe in the dictionary variety of hoodwinked, too be blindfolded, there is no need you already are.
For others the term hoodwinked is used as a symbol of the secrecy, silence, and darkness in which the mysteries of a very special art should be preserved from the unhallowed gaze of the profane.
Some would say it has a symbolic reference to the passage in Saint John's Gospel (and I agree) it shineth in darkness; and the darkness comprehended it not."It also may mean, on a deeper level, that one purposely allows oneself to be blindfolded so one will not be distracted by the illusionary nature of the material world, it stands for that darkness which is due, not to accident, or to tyranny, but to a lack in the soul itself, which the darkened one alone has the means to remove, and once one finds that "light that shineth in darkness" one will comprehend the words of *Johann Wolfgang von Goethe, “Someday perhaps the inner light will shine forth from us, and then we'll need no other light.”
*Johann Wolfgang von Goethe, 1749 - 1832, was a German poet, philospher, mystic, and Freemason. In his dying moments, his last words were, "More Light!"