Portraying the oppressive religion that controls society in The Handmaid's Tales as being Christian, shows the book and TV series to be at least 30 years out of date (and if you think that Trump is sympathetic to fundamental Christianity, you haven't been paying attention).

We can forgive this in Atwood's book, as it was written over 30 years ago.  The TV series, however, might have been relevant had it portrayed the misogynist religion as one whose name translates into English as "submission" (from the Arabic, aslama, "resign oneself").  That, however, would have taken courage.