I think religion adapts and changes; religion was more mainstream, less toxic, and uniform than it is now. The median person is probably less religious (in terms of sticking to an established religion) but the upper 1/3 of the spectrum is more religious, in that they believe more extreme things, with less evidence, and are less likely to compromise. The past 40 years of the evangelical movement, which has been coopted by the conservative movement, has been extremely polarizing.