Don't worry! It's harvested by volunteers as a tourist event. This video is old, but I promise they do it every year.
The rice is offered as rice balls or mochi, etc. at the planting, harvest, and winter events. And sometimes sold. Below is from a different town...most Japanese town offices are still really behind as far as uploading media and such....but you get the idea.
This is the same town. They started winter rice field art in the snow as well.
Every spring, Japaneses farmers take a lot of time and effort to ‘paint’ images in their rice fields using white, black, and yellow-hued species of rice.
Invasive plants are Earth's way of insisting we notice her medicines. Stephen Herrod Buhner
Everyone learns what works by learning what doesn't work. Stephen Herrod Buhner