The “devout Christian” should read his Bible, because it prophecies the earth will be like a used up garment in the end. That doesn’t mean we should trash the place of course, but it does mean this earth is not going to last forever. It’s already scheduled for demolition, and no government can save it.
Hebrews 1:10-12 ESV
And, You, Lord, laid the foundation of the earth in the beginning, and the heavens are the work of your hands; they will perish, but you remain; they will all wear out like a garment, like a robe you will roll them up, like a garment they will be changed. But you are the same, and your years will have no end.
He is a “devout Christian” like Jimmy Carter.