I would contest that. They can be either but not both. They are either not very smart biologists or not very devout creationists. Or more likely just attention seekers.
My ideas about irreducible complexity and intelligent design are entirely my own. They certainly are not in any sense endorsed by either Lehigh University in general or the Department of Biological Sciences in particular. In fact, most of my colleagues in the Department strongly disagree with them.
Not true. I know someone who last I spoke was in graduate level cell biology and did lab work on brains at a top university, yet did not believe in evolution. In fact, I recall her citing her personal awe of the brain etc as evidence of intelligent design.
Don't underestimate humans' abilities to selectively ignore evidence, the immense pressure of their peers, parents, and friends who have similar beliefs, and the underlying fear of death that motivates people to believe in an afterlife (and all the various attached beliefs from there) to allow compartmentalization of beliefs from knowledge.