Some people will always despise what is new because it is cool to hate what is new. That said, the 6.5 CM has been around long enough for anybody whom wants to give it a chance to have a go at it. My favorite rifles are chambered in 6.5 CM and 6.5x55. I’m extremely satisfied with the way those rifles have performed. I’m also happy with my 308s, 257 WMs, 300 WMs, 6.8 SPCs, 30-06s and well, you get the picture. Heck, I’ve even come to love my little 30” BLK and I was an avowed 300 BLK hater for a loooooooong time.
No cartridge is perfect, but many are great for multiple uses. The 6.5 CM falls into that category. It does a lot of things extremely well. It’s not at the top of my list for a grizzly cartridge, but it kills the absolute crap out of pigs and deer and that’s about all I hunt.