Just curious, but why is the 6.5 Creedmoor so reviled? Certainly it has its limitations, but so does every cartridge. I wouldn't take a 22 LR for whitetail any more than I would take a Creedmoor for elephant (W.D.M Bell notwithstanding). That said, I came to hunting as an adult and my young son has learned hunting with me. When researching his first deer rifle, A Weatherby Vanguard Youth in 6.5 Creedmoor made good sense. Cheap, accurate, and loads of support for the cartridge. (I know a 6.5/55 would also have been great but price and availability were not good here). At 9 years old he killed his first whitetail with that rifle and has it accounted for probably a dozen or more by now. It is an efficient no nonsense killer of small to medium game and is perfect for where we live. I would think it would do reasonable service on small plains game as well.
We are point blank range hunters. I won't let him take a shot past 275 yards, but he has never had to. We can always sneak in closer than that.
We are not into social media and do not watch any hunting youtubers, so I'm out of touch with the trendy side of shooting sports. My preferences tend towards wood and blued bolt actions in calibers that Teddy Roosevelt could have shot, but the Creedmoor just works. My son is currently on an overnight hunting trip with a local Christian outdoor organization. They supply all the rifles if the kids need one, and they have a rack of Ruger Americans in 6.5 Creedmoor.
For all the hate, it seems to be a straw man argument. I know the Creedmoor cannot do anything that other cartridges didn't already do, except that the marketing and factory support have rocketed it to popularity so that it available and easy. Besides, which new cartridge has ever really brought a completely new capability to market? everything is to some extent derivative.
I guess I'm feeling a little self conscious about my decision, and I certainly don't want my son to grow a man bun. I doubt I have much to worry about. He is now 5ft 10 inches tall 14 years old and took his last two deer with a 45-70. Hopefully that will be enough to bring his testosterone back up!