We allow people to poison themselves with narcotics. We are legalizing this more and more knowing it's poison. The argument is people can make their own determination --but here the argument is whole countries can't make a determination?

We, the US, allow things to be imported to the US which are banned in The EU too. We ban but sell to them things they don't ban. It's up to each jurisdiction to make their own determination. All countries have access to the toxicity information on things they import and can do what they want with that information.

I don't think using the US as an example here is very strong for your position. The US has fewer restrictions than the EU for exactly the same reason the EU sells poisonous shit to poorer countries: there's a lot of money to be made that way.