Earlier quoted context omitted.
This is higly correlated with regulatory laws governing agriculture in US and Europe. EU has much more strict policies, limits on pesticide use, no GMO rule, plus specific laws to protect traditional (sometimes centuries old) product recipies from being faked by inustrial-scale producers, replacing natural ingredients with chemicals. That's why food generaly tastes much better in Europe.
> replacing natural ingredients with chemicals. How is natural vanillin any better than synthetic vanillin? Matter is matter. Organic molecules are identical whether a plant produced them or a chemist.
Vanilin itself is a good example of the exact same molecules, but for instance I remember on chemistry class discussing banana flavor extract: it tastes "like banana" but it's not actually the same chemical component. Making a cake with that chemical and labeling it banana bread could be done and probably won't taste the same.