Ill assume youve never been to a college football game, and just say this:
while I agree, more crowd participation would be great...
There is one simple honest fact that nearly every person in those videos is hopped up on home made punch, crown royal shots and tallboy beers. All relating to Tailgating. pictured below.
http://twf.com.au/imgcache/1313.png
while, Im not suggesting people dont get lagered up at the rugby, but theres a large difference to a carpark full of united fans, sharing bbq's and throwing around footballs, vs. three or four guys struggling to get served at the bar of the Brisbane, amidst a sea of other force fans also struggling for the same bar space.