You're a handloader as are many here (self-included). Still, it's quite amusing you're not comprehending the 6.5 Creedmoor popularity when likely 75-80% (maybe more) of shooters DO NOT handload. It's not a whiz-bang-performance or comparative thing with most.
The National Shooting Sports Foundation did a survey a few years ago and found that 90% of hunters don't handload....