You also said: "If reality changes science will adapt". If this is not essentially a claim that science ~"understands reality", then what is it claiming?
Esoteric arguments portraying an ineffable, unobservable stream of will that never interacts with reality is not observable by definition; since it doesn't interact with reality, it can be safely ignored. Roko's basilisk be damned!
But no, it's because there's no proof. If we had evidence that something mystical was happening then it would be a huge breakthrough and it would eventually become science.
Furthermore, do you think there's something about becoming a scientist that converts Scientist Humans into perfectly rational beings?
I'm not sure why you feel the need to bring divinity into this. The universe is not purely a automaton not because of some purported unobservable god, but simply because all experiments indicate that we cannot predict the behavior of the basic building blocks of the universe.
Are the adaptations both flawless and adequate to meet the claim? How would such a thing be tested to confirm truth?