So a scammer just tells PayPal "my account was hacked" and gets money back at sellers penalty with no investigation? If sold on eBay means eBay account was hacked + associated PayPal account hacked + record of actual payment to provided bitcoin address in payment note.
Paypal almost always side with the buyer regardless of what the product is. When it comes to digital goods they'll be even less inclined to do anything. That's just how they roll. At least you're informed enough to know not to mess with it there.