Its more about eBay supporting these fraudulent peasant sellers!

eBay cannot act on heresay, your word.

They require written proof from an authority just like the police would if they were to pursue something.

And keep in mind, eBay is an advertising media not an entity providing a guarantee.

You buy from other people and businesses advertising on the eBay site.

If you bought an item out of a classified newspaper and it turns out to be fake, you don't expect the newspaper to know if it's fake or not.