That said, the given justifications still seem subjective to me (why should serifs only taper? I actually like the added weight because it seems to emphasize the orientation of the letter. Why should fonts be scrutinized according to the laws of physics?).

I suppose to some degree the difficulty I'm having is what I view as an over-emphasis on objectivity in a discussion about aesthetics. Not that your perspective is wrong per se, but I find it hard to ignore the strong preference among my peers for choosing (and commenting positively on) this font.