That study you linked does not establish a causal relationship. It may simply be that the sort of person who is able to extract well-being from church is the sort of person more likely to actually attend church with any regularity. It likewise does not address the possibility that depression itself might make one want to stop attending church.

>Millenial cynicism is so boring

Yeah, it's always Millennials who are in the wrong. Fuck us, right? It's all good, we're used to being the scapegoats for society's problems.

I'm a millennial and I feel like nearly all the discourse about who is (generationally) responsible for society's problems is aimed at the boomers. And the zoomers to a lesser extent, though that seems more of a prophecy about how they're going to ruin society. Jabs aimed at us millennials tend to be that we're cringe (or boring), which I can accept.