To Voldemort, this was nothing. Although it was necessary to personally know Snape, the former owner of the Death Stick, as long as it was confirmed that the wand obtained from Dumbledore's tomb was the legendary Death Stick, even if Snape needed to be sacrificed, Voldemort would not even look at it. Won't blink. With the death stick in his hand that absolutely obeys his orders, Voldemort can easily clean up the current situation.