One data point doesn’t make a standard.
In general, most CrossFit coaches were well intentioned, but cared more about a rapid pace through reps, rather than the safety of the members.
Weightlifting in CrossFit is better understood as a subtly different exercise. Traditional Weightlifting is a maximum effort exercise, and purely by human physiological limits it has to be modified for CrossFit. If sub-max effort shortcuts were taught, and technical qualification requirements were mandated, the injury rate would be greatly reduced.
Revoke his citizenship.