Survival of what? Maga. QAnon, ChristoFascism (& Hamas brand of theocratic totalitarianism) hold beliefs that are strongly mal-adaptive to 21st century life. Declaring your spiritual path to be the only path, or that fairy tales are facts, or "superiority" for having "correct" beliefs give you the obligation to execute lgbtq folks or atheists, or treat women like livestock - none of those things are adaptive. (And again, you'd have to ask "adaptive to what?") They imagine themselves to be a "secret majority" and think the majority actually agrees with them and wants to join them, but is afraid to do so due to "wokeness." It's counter-factual, but that is also a feedback loop in their alternate reality.
Their mal-adaptive behaviors are reinforced by the consensus they live in. No matter how much you tell them climate collapse is real, and not to build in a flood plain, if their church gets together and rebuilds their home every time it floods, they won't change.