The second and third links make the argument that churches increase the health of the people who participate in it.
Neither says that churches are 'net positives' for a community. A church can easily make it's members healthier, while also hurting the larger community as a whole by occupying very valuable real estate while contributing nothing back to it's non-members.
Though I suspect I could throw hundreds of articles/research papers/studies at you and you'd still balk and say they're slanted, unrepresentative, etc.