The point of the piece I think the guy was trying to put across, if you read between the swearing, is that before his accident and subsequent paralysis - christopher reeve didnt have anything to do with (charities or otherwise) paralysed people.
In someway I can see his point - my mother has Multiple Sclerosis (for over 15 years now) but we (as a family) didnt do anything to help towards the cause of finding a cure for MS, simply because it didnt affect us until she was diagnosed with it.
Plus it's not written by some school kid - go check out the rest of his rants here:
http://maddox.xmission.com/