How can you credibly make clear that the texts are not being endorsed, if you ask your students "to make a good faith, unironic effort to reconstruct the offensive argument in its most persuasive form, marshaling additional supporting evidence and amending weak arguments to better support the author’s conclusion".

Remember that people will not judge your efforts rationally, but merely by connotations and opportunity to express outrage.

The mere fact that you teach this course means that you already skipped an opportunity to signal your disagreement with the texts by refusing to teach the course. Sometimes not screaming "NO!!!" loud enough is interpreted as an evidence of secretly thinking "yes".