A guy like Dean is completely unremarkable in any way except that he’s willing to jog for a longer period of time than most. He makes bizarre claims about his physiology and everything he does seems to be calculated with the goal of getting the most attention possible for just being an ordinary runner. People here dislike him because they are forced to talk about him with people who don’t run because he inhabits part of popular consciousness.
I personally think he is full of crap and I arrive at this conclusion because he seems more interested in getting the attention for doing something rather than the doing of it. Also, I find the Park Rangers more credible than him.
I’m sure there are other people who hate on him because they are jealous, but I think they are in the minority here. Just my $0.02.