That's something new to me, they have always told the CR guy that they would cover a camera issue if Canon did not. He even posted it a few days ago.
I did look at their current ebay listing for the 6D here:
http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=231030095096&item=231030095096&lgeo=1&vectorid=229466
I did not see anything excluding a warranty, just this note:
"All products we sell are brand new and includes warranty coverage unless clearly specified on the listing."
Perhaps there was some item they sold without warranty, they sell thousands of different items.