Religious tyranny is not a conservative ideal. It is no better than any other sort of tyranny. Nothing of value is being "conserved". Freedom is non-existent. Reason is not integral to the decision-making process. Religious tyrants are just like any other tyrants, with or without the fashionable attire.
Religious tyranny is the same as communist tyranny, in that all of a society is controlled by a small group of fanatics who dictate the terms of existence for a multitude of other people.
Obviously you don’t know what you’re talking about because obviously you didn’t actually read the book. Therefore, your comment is useless.