There are billions of Christians, Muslims, Buddhists, Atheists and Agnostics. I wouldn't automatically dismiss any research by any of them. Nor would I automatically trust it because it came from one of them.

Now, if I have more information about a particular group an individual comes from, I can certainly do that. Like, if it comes from The Institute for Creation Research I'm not trusting anything they say. Or if they are funded by a large oil company and do climate research...