Any S&C done incorrectly can cause injuries. Other issues cause injuries as well. Turf, personal make up of a kid, lifting more than you are capable, over use, bodies not getting proper rest between seasons for multiple sport athletes, etc.
Injuries are more prone to happen in football.
Same S&C coach for basketball, baseball, softball , track, swimming, wrestling, tennis, etc.
Not saying S&C isn’t the problem for some…but need to look at all factors involved. Not just one aspect of the process.