Blaming individuals in these scenarios is always strange to me, people mostly trust that the items they can purchase won't harm them. It's an immense burden to saddle the consumer with endless research of every product they purchase, on top of their usual time needs from work, commute, family.
No, what it has made abundantly clear is that poor incentives produce poor outcomes. There's significant penalty for underlabeling with regard to the known to cause cancer business and no penalty for gratuitous labeling. So every damn thing gets labeled to minimize potential liability and now carcinogenicity is a joke.