Reheating rice can cause food poisoning? I'd never heard of that, but it seems to be legit:
https://www.nhs.uk/chq/Pages/can-reheating-rice-cause-food-p...However, you have to leave cooked rice at room temperature for that to be a concern. The method discussed above speaks of "chilling" the rice.
In any case, I've eaten plenty of rice (and lots of other things) left at room temperature for a day, and I've never had problems. But yeah, anecdata.