Scientists are only human.
In the theory of darwinian evolution (even if we accept the notion of progression from one species to another) the mechanism of evolution -- random chance vs. divine direction -- is equally unproveable on either side, although the apparent and exquisite design we see all around us provides practical evidence of the latter.
Yet the former is dogmatically embraced by scientists.
This opened the door to science based on worldview assumptions, in this particular case, the twin assumptions of the sufficiency of human scientific endeavor (God cannot exist because we cannot prove Him), and its attendant consequence, a commitment to the philosophy of materialism (the material universe is all there is).
The end result of all this is to, in effect, make scientists themselves gods.
And this brings us back to Genesis chapter 3. "Eat from the tree of knowledge -- you shall be as gods."
Advise many scientists apparently find impossible to resist.