Do you? What about the US military? Are not enlisted men expected to be obedient to their superior officers?
True, an enlisted man can refuse an order that contradicts his conscience, or contest to higher authority an order he considers wrong, but he can never invent his own orders.
In a group like Opus Dei, (technically, a personal prelature in the Catholic Church of lay people who freely choose to be members), the situation is similar for members in living out their chosen apostolate.
This has always been the case for the various religious orders in the Church. What makes Opus Dei unique is that it is set up for working lay people.
Don't forget to read the following:
"Obedience in your apostolate, the only way: for, in a work of God, the spirit must be to obey or to leave."
Nobody is being asked for "blind" obedience. The author simply cherry-picked quotes out of context, changed words, etc. Jeez, you'd think he had an agenda or something....
Were it the case that most secret societies work for what's best for all people of good will, I'd be less inclined to oppose them. But history suggests otherwise. In the end, it often happens that the secret societies work for what's best for their own members and their own interests, and if that happens to coincide with a wider good, okay, but if not, too bad for the wider good.
But perhaps I'm too cynical...
"True, an enlisted man can refuse an order that contradicts his conscience"
Huh?
Unless things have changed radically in the past few years, the only order that can be refused is an unlawful order.