I’m not a coach, but as an athlete who has spent 15 years in the gym, I can tell you from my observation that too many athletes have gotten away from the simple basic compound movements such as the squat, pull up and dead lift.
On the other hand, I have also seen many athletes using Olympic lifts who were not instructed in how to do them properly. You can CLEARLY see it when you watch their form. And to make matters worse, the “coaches” just stand around a watch the athletes throwing weight around with bad form.