There is nothing in the TOE that devalues human life. The TOE just talks about how our species (and others) got where it is today. Any atrocities we commit are done through our own free will and can't be blamed on a theory that does nothing but describe a certain portion of the physical world.
The value system implicit in Darwinism was made clear by one of it leading advocates, Julian Huxley,
“The lowest strata are reproducing too fast. Therefore... they must not have too easy access to relief or hospital treatment lest the removal of the last check on natural selection should make it too easy for children to be produced or to survive; long unemployment should be a ground for sterilisation.”
Huxley J.S. 1947. Man in the modern world. Chatto & Windus, London. Originally published in The uniqueness of Man, 1941”
To say that that what one has as a belief system is unimportant because we have free will is nonsense. Our free will is simply our our ability to make decisions.
To say that a paticular view point is not harmful in and of its self for what sort of conduct it encourages defies experience and logic.
How much can Darwinism devalue human life when it is already considered just a lot random mutations and purposeless triumph of chance?