The initial question in the OP has been answered.
The OP has decided to prefer that fantasy to reality.
This is always possible.
Yet reality always wins.
Evidence always trumps beliefs.
Those who value source or beliefs over reality can of course bring about destruction, yet reality will continue.
Religious nuts can and have destroyed many civilizations in the past and religious nuts can and likely will destroy civilizations in the future.
Reality really doesn't care. Humans just are not important to reality.
If the Religious Nuts destroy this civilization the world will continue to exist, the universe will continue to exist, it's likely even life will continue to exist. All that would be lost are humans.