I get upset because a huge portion of people speaking out against the pentile are just doing so because they need SOMETHING to gripe about. Anything over 300ppi (effective) is going to be unnoticed by the vast majority of people. The truth of it is, you have to see it yourself before you can pass judgement, and people are already griping about it with absolutely zero experience. And using the GNex's screen is additionally an unfair comparison, since it's an older generation and different process (4.65" vs 4.8") which will yield a different viewing experience.
As for white-knighting Samsung, I'm far from that type of person. I've owned far too many Samsung devices, and unless the GS-III blows me away when I get my hands on it, I'll be picking up the RAZR HD (unless they screw up and put a horrendous RGBW screen on it, but I'd still have to evaluate it personally before I said one way or another).