It makes zero sense to me that Amazon might be liable.
Amazon should at least be liable for willingly selling items that do not match the description (if they tell me it's a Sandisk SD, I buy it because I believe it is!)
Segregating stock from different venders would go a long way to fixing the problem. Right now everything is just thrown into the same slush bin, so Amazon can't tell which vendor sent them counterfeit goods when a customer complains.
The counterfeit packaging was almost perfect and the strings where metal (just not coated like they should be). I literally don’t even know why you would fake those.
Much like gun manufacturers aren't responsible for their use, I can't imagine a platform which lets vendors set up their own shops online becoming responsible for what is sold by the vendor.
Liability laws are not consistent.