If she shot it with a Creedmoor, it can't be dead. This is some elaborate ruse! You trained that deer to lay down in front of your camera for pictures!
As per the original OP, Yes the hate is caused by overblown melodrama that follows the Creedmoor.
That...and the Art History major in the Banana Republic "distressed" jeans, at the range shooting his 14lb, muzzle braked, Bergara with no modicum of gun safety/firearms/real-world knowledge. He bluntly states that his rifle could bring down "any game in North America", but admits upon further questioning, that he has never been hunting a day in his life (it's too uncomfortable). He goes on to say that "if he did", that trusty rifle, with him at the wheel, and a ghillie suit over his Patagonia sweater, would "hammer" anything within 1,200 yards.
The above is a make-believe scenario... but it is assembled using very real data points.
That, and highly experienced, expert hunters, who can and DO bring down large animals with a 6.5 (insert cartridge here), telling brand new hunters that it is the end-all-be-all of rifles. Or going on and recommending a 6.5CM for a first-time Elk hunter from the Pennsylvania woods, headed to the wide-open mountains of Wyoming. Wouldn't wisdom indicate that they should start with something that has a bit more margin of error? new hunters, buck fever, and precise shot placement do not go hand-in-hand.
There are a lot of other reasons, but I digress. We don't hate it. We really don't like the tremendous display of ignorance that it, more-often-than-not, engenders.