I have to concur. I employ quite a number of devout Mormons as scientists and engineers. They are as professionally competent in their roles as non-Mormons. Religion does not factor into the work they do for me. No doubt there are some screwy Mormons, and it may be that Dr. Meldrum is one of them, but that's a claim that would require more evidence than just categorical reasoning.
Oh he's a screwy mormon all right:
In Who Are the Children of Lehi? Meldrum and Stephens examine the merits and the fallacies of DNA-based interpretations that challenge the Book of Mormon’s historicity. They provide clear guides to the science, summarize the studies, illuminate technical points with easy-to-grasp examples, and spell out the data’s implications.
The results? There is no straight-line conclusion between DNA evidence and “Lamanites.” The Book of Mormon’s validity lies beyond the purview of scientific empiricism—as it always has. And finally, inspiringly, they affirm Lehi’s kinship as one of covenant, not genes.
Reminds me of the Dara O'Briain line aping a wooist "There's more to life than evidence!"

