Amazon needs to take full responsibility for counterfeiting. I'm tempted to charge back certain purchases instead of going through the normal highly annoying process.

Being able to return an item no questions asked is not an appropriate remedy for getting a counterfeit product. It's a major hassle to box something back up and return it, and Amazon does not have a good solution for situations when the product that arrives is completely broken or is total junk/DOA.

Joining a class action lawsuit usually takes no action at all, but some action is required to opt-out.

So you've basically just said your been burned enough to do precisely nothing about it.

Now, if you were willing to initiate a lawsuit, whether class- or direct-action, that would be saying something meaningful.