I don’t think it’s terribly controversial to say I believe that education actually causes both lower religiosity and more progressive attitudes towards marginalized groups. Basically I’m not surprised to see that relationship and I’m not sold on it being an important one. I think in our world you could probably use religiosity as a loose metric of bigotry for large geographic regions, but I don’t think that minimizing that metric would minimize the thing being measured.
I also don’t see how we could even go about attempting to minimize religiosity other than by promoting education. And much like our scientific models that don’t need god to work, I don’t need to appeal to the value or lack thereof of religion to say why I think it’s better for people to be better educated.