One of the reasons that OL'ers will not train all of their lifts in an explosive manner all of the time is that this is only one method of the basic three wrt increasing strength. Dynamic effort will influence any number of neurophysiological responses, such as rate coding, recruitment, etc, but is less than optimal for maximal hypertrophy or pure CNS stimulation.
Maximal gains in CNS recruitment are seen through the maximal effort method (using a 1 rep max). This method does not improve several factors, but greatly influences others, including autogenic inhibition.
Reptition training will stimulate maximal hypertrophy, but does little for most neural factors. Furthermore, it can cause sarcoplasmic hypertrophy, which is next to useless at best and doom at worst for an athlete who wishes to remain in a weight class, as it contributes little in the way of contractile strength as well.
WSB powerlifters train explosively at least twice a week, on the squat and bench, respectively. Always. Two other days are devoted to maximal effort, and even on ME days, the goal is still to explode with the weight.
OL'ers will training some of the lifts explosively constantly, sometimes several different lifts are trained explosively each workout. Only a very few lifts are not trained in an explosive manner, and even these are not done to any sort of slow tempo, maybe a two second eccentric at the longest. Examples being good mornings.
One of the things that is often misunderstood about OLing is the degree of specific training that must take place. Good example from the early seventies. Patera(USA), Redding (Bel), and Alexeev(RUS) were the leading SHW athletes. Both Patera and Redding were far stronger on the squat and deadlift than Alexeev, and both spent a fair amount of time on assistance work, moving weights in a slower manner. Alexeev spent all of his time training in a ballistic manner, and consequently was able to acclerate his lifts with lest wasted effort on the plaform. And on meet days he always won. Alexeev had developed both his sport specific strength, and improved his recruitment patterns to such a degree, that he has the greatest differential wrt speed of his first and second pull of any athlete ever measured (1.0 m/s:1.8 m/s), and it has still not been achieved by any athlete even 30 years later.