The 6.5 creedmoor
is a fine cartridge, but really, it does not much that a 6.5x55 Sweed or PRC or 260 remington won't do. The most important factors are the quality of the firearm(barrel, action, stock, bedding...i.e. top components put together by a top notch gunsmith) and then the shooters ability. Almost everything in the shooting world revolves around "new", just like in the food industry at McDonalds, Tim Hortons, Burger King. "New" sells, its the human quest for new, different, adventure, whatever you want to label it.
There will be some fade to the 6.5 C after a while, after shooters see how fast a barrel erodes and looses its competitive edge. 6.5's are a great long range performers given good rifles and accurately assembled ammo, but the price you pay is shorter barrel life vs. say a .308, 30x47. Hard core competitors know that and accept the quicker barrel wear out for the performance.