No it is not, you have to provide proof of delivery and the only proof they accept is tracking from Royal Mail or some other carrier. The only exception is for motor vehicles.
It is no scare story, just go to the sellers forum on
Ebay and find out. Of course if someone did this to you you could take legal action against them, but that would be a right pain, and if the person collecting has actually hacked an account to win the item then you don't even have this option. There was a big scam just before Christmas with winners of expensive phones saying they needed the item urgently and could they collect several people lost lots of money.
If I had a big item that could not be posted I would use Gumtree not Ebay.