Firstly, I am assuming that “they” is referring to Christians, which the op did not specify, and my subsequent commentary is interpreted to generalizing to all presentations of religion. While I explicitly pointed to Christianity, that was because I was referencing my personal faith journey.
Secondly, we are in agreement that the Pentateuch, in its literal form, calls for and endorses a society which does not privilege equality for all races, genders, or creeds. I would assume we are also in agreement that the epistles of Paul and Timothy and other early Christian writers have some pretty messed up opinions of who God is and what God wants.
But you yourself drew attention to the agency Christians, and all other faithful people, have. There is choice, and people do choose, to interpret scripture as non-literal. By the virtue of this existence, one cannot simply label all religious expressions as backwards or at issue, as I originally posited.