WAM,
It isn’t about marketeers selling the 6.5 Creedmoor. Quite the contrary- you never needed a magnum to kill elk easily. THAT was and is marketing. What you are seeing with the Creedmoor is a rediscovery by the masses that you don’t need magnums.
Nothing more.
I absolutely agree. I have always been a 7 mag fan and still am, but they are spending a lot of time sitting around, since the arrival of my Creed and two, .260s. As I get older, I am having a lot more fun shooting/testing loads, with a light-kicking, accurate rifle, that costs relatively little to reload.