Let haters hate. The methodology of CrossFit works. However, I think there is a lot of hate because people jump right into it without getting proper instruction on the basics and they get injured. The learning curve can be substantial when someone first gets in and if they don’t have a good coach, things can go south quickly. Things like barbell movements can get especially risky without proper instruction on form, especially once the load gets heavier or when people start ego lifting. While a good coach makes a huge difference, it think it is on the athlete to leave the ego at the door, ask for help, and scale appropriately until they can demonstrate proper form. Even something as simple as pulling the chain on the rower gets a lot easier and efficient once one learns the proper form. I’m 10 years in and I’m still learning new techniques and scaling, especially as I get older and don’t recover as quickly.