I don’t think you need to be able to clone yourself to raise a child with broadly similar values to yourself. My point is that I don’t think you can simultaneously argue that the older generations were raised in a way that was succesful at making them religious individuals (in ways kids these days aren’t) and that that same generation is systematically failing at passing on religion to their children. Which leads me to believe these generational differences in religion don’t really exist

I think this also applies in the case of religion yeah, in the sense that many people who "fail" to pass on religion to their children were mostly just not actually that religious in the first place. So you've helped me reaffirm how consistent, smart and true my beliefs are.