Lumping all artificial dyes together is a sign the regulations RFK Jr. is proposing or implementing are unscientific. These are different chemicals, and actual scientific or medical arguments would treat them as such.
There's plenty of good discussion possible about which additives in food should be regulated more. But making this kind of unscientific push is harmful in the end.
I somewhat support being unscientific in this case.
It's not as though food dyes are being used to make healthy foods more palatable. It's quite the opposite, that food colorings are used to make processed foods more stimulating, which in turn makes non-processed foods less attractive.
I support this in the same way that I'd support an outright ban on processed food advertising (especially to children). There is a health crisis in the US (and much of the western world), with one factor being the prevalence and poor nutrition provided by processed foods.
There's plenty of good discussion possible about which additives in food should be regulated more. But making this kind of unscientific push is harmful in the end.