I think that you're still one level more abstract than what is happening here.
Tariffs are set for classes/types of goods/materials/etc... and Kinder Eggs were banned because they didn't comply to a regulation (small dangerous foreign objects contained in the product - maybe other similar products had to be banned as well but those ones didn't reach the headlines).
In this case the decision applies to a very specific company/product and that decision is not based on a rule/regulation/etc..., I think => on one hand it doesn't have any impact on other similar companies/products, on the other hand it scares me that a single person is able to enforce on-the-fly these kind of decisions.
Tariffs are set for classes/types of goods/materials/etc... and Kinder Eggs were banned because they didn't comply to a regulation (small dangerous foreign objects contained in the product - maybe other similar products had to be banned as well but those ones didn't reach the headlines).
In this case the decision applies to a very specific company/product and that decision is not based on a rule/regulation/etc..., I think => on one hand it doesn't have any impact on other similar companies/products, on the other hand it scares me that a single person is able to enforce on-the-fly these kind of decisions.