Woodcollector is the most recent one and got a lot of hate for what he did, his idea was pretty unique too, he made cheap wood carvings and claimed they were hand calved so he could con people out of a lot of money for it.
He didn't scam that much but at least he actually sent the product, he just sold it as something it wasn't (though they still looked great regardless that he didn't actually hand carve them).
As somebody who does actually make Jewellery by hand, I can tell you it's a very common problem and does fall within scamming, even if it isn't a scam, it's still incredibly dishonest, unfortunately a lot of people do it and don't think there's anything wrong with it.
The problem is people like Woodcollector inevitably make it more difficult for genuine crafters to make and sell stuff online because of the trust lost.