This assertion assumes that secularity is logically prior to religion, that public truths are secular truths. That such an assertion is quite recent in the history of human thought seems irrelevant to the author's argument. Secular truths and language can be just as incomprehensible to religious people as religious language is to secular people. I suspect that another reason why many liberals and multiculturalists do not discuss religion enough . . . Spinner-Halev presents autonomy as an unqualified good.
Theology contends that autonomy is more often a source of evil.