“Insidious” ignores he value-function of religious organization and community, serving to support the social welfare of its adherents and sometimes broader society. Me, I’m an atheist. I don’t buy into the dogma. However, the role of religion is an important one beyond the metaphysical experience. That’s not to take away from the ways in which religion can be used as a tool for oppression, segregation and authoritarian control. Every system of social organization runs this risk (e.g., despotic governments, abusive corporate boards). Power can be abused. However, it’s myopic and frankly blunt thinking that chooses to conclude that religion itself should be abandoned, fought, or disregarded. The metaphor that comes to mind is throwing the baby out with the bath water.