People Don't Like the Overall Theme
There is a notable difference between George's appearance in this special and his final standup special "It's Bad For Ya."
The content of this special is very morbid and dark as many other posters have mentioned - the background is black, he covers many topics that aren't necessarily taboo but are things people don't want to hear about or seem bat$hit crazy like donating female genitalia, writing a sucide note, pyramid of the hopeless, how US mistreats people, the world burning to the ground, etc.
I would say its probably his darkest show and I think the material in his later show particularly the stuff on "Parents in Heaven" and "Rights" is much better then anything in this.