Re: Why doesn't Harrison throw a fit when he's being held?
I'm sure he's either had it explained to him, or he can read the writing on the wall. The rules are designed and enforced to favor the offense. The geniuses up top have decided that people want high-scoring games played on pristine Technicolor green playing fields. Never mind that the 9-6 defensive slugfests played in the mud and snow are invariably the highest-rated games every year.
Anything that helps scoring goes, including holding James Harrison on every play.