Molecular biologists who believe in design or theism have just as much motivation to study some natural thing in depth as ones who have a strictly naturalist view of the universe: - Julia Orwell
People like Behe and Dembski don't do useful research or publish anything original. They are parasites who look for gaps in current scientific knowledge where they can insert god - except they never say god in public because that would undermine their efforts to get ID taught in schools.
Google "Wedge Strategy" if you have any doubts about their non-scientific motives.
Scientists like Kenneth Miller and Francis Collins are different. They advocate Theistic Evolution - god is in the initial conditions but every single step in evolution was 100% naturalistic. Intelligent design cannot be detected and is not required.
The key thing is whether or not a scientist adheres to the principle of methodological naturalism. Regardless of personal beliefs supernatural answers are off-limits.