Idk, I counter the “God created Earth” argument with the Biblical injunction to Noah and his descendants to be good “stewards of creation” after the Great Flood, which usually works to end that line of flawed reasoning, at least.

E.g., “God created the world, yes, but he gave humanity dominion over the Earth and trusted us to govern it well. We’ve been given 10 talents (aka gold coins), and when the Master returns we better have used the first to earn 10 more rather than bury them like the frightened servant or waste them like the prodigal son.”

Maybe I’m too participatory, but you can sway religious peeps by arguing using the same framework they do. Worked pretty well on my Catholic parents, although they still question the “degree to which humanity is responsible for global warming,” meh.

The efficacy also be dependent on which denomination of Christianity you’re arguing with, though, since the argument kinda relies on exercising free will and choosing to be responsible as part of the effort to go to heaven, which might not play super well with crazy predestination theology…

As for the echo chambers, yeah, idk what to do about that.