I also happen to live in Japan, that's prob why I knew this example well and I'm well aware/critic of the covid situation and the Olympics being pushed forward.

Abe resignation seems to be based on being sick though, there was some, well extreme people measuring how long it took him to walk a fixed distance over time and when he started to slow down significatively, they predicted he was sick. He resigned few days later, officially because of an illness:

https://www.wsj.com/articles/japans-abe-goes-to-hospital-for...

I highly doubt that AtlasObscura article, it sounds like a classical urban myth. In East Asia there are tens if not hundreds of millions of people who've eaten nothing but white rice as the staple in their diet their whole life, and it's not caused any issues as far as I'm aware. Of course if you eat just rice and nothing else, that might be unhealthy. But that's not an issue with white rice.