I sit near the front of that block. There are a fair few moaners but I've never heard anything like you describe. There is one comical old man who supplies a running commentary on the performance on the linesman in front of us. I do believe it's the best view in the ground and that's why i sit there (and easy access to the bar). In fact in the same seats for the last 20 years!
As for the lack of excitement for the penalties, I think in the first case it was because everyone was completely bemused about why it was given. Nobody around me saw why. Anyone know?