[dkarl]

In my experience, Crossfit trainers are good at coaching form. Their top priority is getting you to do the movement and get a good workout, but when somebody has bad form, they coach them a lot and make sure they use light weights or no weights at all until their form is good enough to lift safely. I always had terrible deadlift form and wasn't able to correct it until I got some coaching at Crossfit. They fixed me up quickly, got on my ass when I got sloppy, and within two months of starting, I was lifting more than my previous deadlift PR -- 45 times in a single workout. (Granted, my deadlift form was atrocious. I was squatting 40% more than I deadlifted and had basically given up on it before I went to Crossfit.)

The better your form, the more you can safely lift, and the more you can lift, the higher the work rate you can achieve. That's the logic that drives the Crossfit trainers I've worked with. Crossfit isn't consistent from location to location, though, so what you say may be true.