That's neither here nor there.

Amazon regularly commingling legitimate and counterfeit goods, means that customers are left with the job of trying to verify that the goods they ordered are legitimate. For every customer that complaints & refunds, there might be three or more who don't.

Some of these counterfeit products have legitimate safety concerns, for example lead paint usage, battery fire risks, PPE that misstates its effectiveness, or USB chargers with poor AC DC electrical isolation.

This is a huge trust problem, and "the customer needs to detect counterfeits and refund," isn't actually a solution to THAT problem.

The solution is a regulator who buys random goods, thoroughly checks them, then fines Amazon for products found to be unsafe/illegal.

Amazon could then persue the manufacturer for sending bad goods.