Ive argued before that scientist and the scientific community is grossly infiltrated with an epistemology that is naturalized. That is to say, an epistemology (under the guise of scientism) that interprets not only that the universe can show no evidence for God but that it looks exactly as it would be expected to look if there is no God. Books are written on this and as long as they write these books under their philosophical faculty, its merely their opinion and nothing more.
Religious people get lynched for even attempting to do anything like that.
I'll agree that some may have a biased epistemology but I certainly don't think that's the norm. Many scientists are theists; even amongst physicists (which is the group of scientists with the highest organic rates of atheism in science).
The problem is that someone must first postulate a testable hypothesis that would lend justification for a god before science can test it. Many facets of theism are unempirical, placing them firmly outside the realm of science. Though science is half metaphysics, those metaphysics are concerning the empirical aspects -- it never touches completely unempirical prospects.
For instance we have all kinds of metaphysics about the wave-function, but ultimately they're metaphysics over something empirical -- the wave-function, or the appearance of a wave-function.
It does appear to me that the universe looks just as it would if there were not a god, but that's a personal, subjective qualia and not an epistemic mode I actively engage in. I'm open to justifications for theism -- why else would I bother conversing with theists?