It's not a straw man, it's hyperbole. What I mean to suggest is not that people actually believe that any other form of knowledge is completely untrue. It's a matter of the relative importance of science compared to other ways of knowing. Scientific medicine vs. other traditions is a great example. Many people seem to have that attitude that if something has not be scientifically shown to be effective, then it cannot be effective, thus implying that scientific medicine is "the one truth" about healing.

A strawman of who exactly? Of the Christian scientists that believe in one true world as created by God? Of the Platonist scientists that believe in the one true essence of things? Of the reductionist scientists, that believe everything is reducible to the fundamental properties of the fundamental particles? Or of the small minority of scientists that do without a belief in one true underlying reality?

Do you actually know any scientists, as you so pointedly asked someone else?