ICYMI: Sideshow Bob wants toxic additives out of food and thinks riboflavin (vitamin B2) is one of them. This article contains a link to the asshat blathering about this on Instagram, so it's really not in question whether he knows what riboflavin is.
This is one of several reasons I hit the streets immediately, even when we wondered whether it was safe. (It is.) These people are gonna kill us all one way or another.
https://www.newsnationnow.com/health/rfk-targets-gras-fda-food-additive-program/