AJ - I think the issue people take is really particular to pass interference, specifically due to the severity of the penalty. What other penalty grants the offended team all of the potential yardage from that play, regardless of whether its clear that yardage would've been earned or not?
The DPI call needs to be revisited, because the penalty is severe, and is arbitrarily and blindly enforced (as we've seen far too often, as we're more often than not on the wrong side of bad DPI calls).
If this were not an issue, if the penalty were not so game-changing, then you wouldn't see things like the Carolina game where the refs picked up a flag for a blatant and obvious DPI for fear of letting the outcome of the game be dictated by that call. To me, what makes sense is allowing grades of DPI, where the officials are allowed to determine whether the call is a 5 yard, 15 yard, or spot foul, depending on the egregiousness of the contact. I know that brings in a lot more subjectivity, but the call is subjective no matter what, and a gradient to the penalty would give greater margin of error to the referees.
As a Patriot fan, a part of me was disappointed the call was made because I felt like Brady was going to earn those 30 yards regardless, and it would've been more exciting to see him do it in another way. The more rational part of my brain quickly told the other part to shut up and I enjoyed the W.