I haven't seen this documentary but it sounds almost like a mockumentary. Is he really that much of a douche? I've seen that he is incredibly quirky, cocky and takes his Donkey Kong seriously. I've seen him make some appearances and he didn't seem all that bad - he was just adamant about not having cheated.Acting like a douche to get attention doesn't make you any less of a douche.
For example, I didn't see him smash a homeless guy's cake and he didn't knock out Rick Moranis. What has he done along those lines to earn him his infamy?