When I started off Japlogism.com I did state that I would not cover individual posts on Debito.org, but a recent comment thread has convinced me to break my promise, but I’ll not make a habit of it, I promise!
The logic becomes, “Radiation? Well, it must be safe, as all those other athletes are risking it. And I’m not losing my opportunity for a medal to some other jackasses who are willing to risk it.”
Unless they introduce Gutter Silt Swimming or fill the long jump pit with incinerator ash (in the first few months there was a definite problem with radioactive residue in Tokyo, but the current burning of residue from prefectures other than Fukushima has little more than just normal background as far as I am aware) anyone talking about radiation risk in Tokyo now, let alone 7 years later is either a scaremonger or ignorant, or both. That goes for both Mr Arudou and the athletes he imagines might consider this.
As for Fukushima not being Fookooshimar, Japan Times does a good article on the lack of exposure in everyone tested.
Oh, and as for the main reason for the thread, Hidehiko Nishiyama does appear to be an idiot, although one bureaucrat uttering "an incredibly racist insult" (I think that’s an over-reaction myself) doesn’t somehow prove that "racism being endemic in the heart of the Japanese state".