It's the latest and greatest......
Until the next latest and greatest
It's not even "new"...it was released in what, 2007? So a decade ago and only in the last year'ish or 2 its started to really "catch on"...
It's popular strictly due to PRS and their velocity limits, as a hunting rifle it's no better or worse then anything else.
If PRS upped their velocity limits to say, 3300...you'll never hear about the Creedmoor again...it'll die faster then the WSSM's...