Ambiguous?Scientism is, I find, an ambiguous term. It begins as a word for those who favor scientific method ahead of faith. It then gets to be used as an insult meaning anyone whose beliefs in science are seen by the speaker as simplistic or excessive.
I'm a materialist ─ I stand ready to be persuaded otherwise by reasoned argument and satisfactory demonstration, but nothing happens ─ and in my view, scientific method is the best way to explore, describe and seek to explain the world external to the self.
But it doesn't work very well, often not all, in assessing certain kinds of human judgment. For instance, it's not the best way to determine whether Tennyson's "Ulysses" is a better or worse poem that Whitman's Leaves of Grass or whether either is esthetically superior to the Shelby Mustang or the Noh play I may write about the Fox's Wedding. Or whether Coke is better than Pepsi (as distinct from, say, Is Coke healthier than Pepsi?).
Try " invidious"