Their stock in trade is not profound theological reasoning, but rather, a crude and simplistic interpretation of religion, backed by intimidation and violence.
Second, for many of the rulers and many other countries, the rulers use religion with their own interpretation, which is better for them, not for women.
Because the Wahhabi scholars became intergreated into the Saudi state, there has been some difficulty keeping that particular interpretation of religion from being enforced too broadly on the population as a whole.