>>76409779 (OP)If your goal is hypertrophy, you want to exhaust the muscles. So resting longer is counterproductive - you should instead exhaustionmaxx and superset or drop set. But if you still go to failure, it's merely temporally inefficient but doesnt affect any of the three factors for muscle growth.
For strength training in the lower rep range, you NEED the rest to sufficiently neurologically recover in between sets. Otherwise, you risk bad form.