I only go to failure on the last set of an exercise, so if im doing 4 exercises for chest with 4-6 sets each, i'll go to failure 4x in that whole chest workout.
If you go to failure on every set of an exercise, its counter productive, you'll just increase the need for recovery without any additional growth.
What you are suggesting is correct....to an extent. It gives back to my first post on intensity vs volume. You are doing high volume, so going to failure every set of every exercise would be ridiculous. You would be fatigued and over trained without the potential of full recovery.
DC is very low volume, and only one exercise and one rest pause set per body part, which is why going to failure on every set of every exercise is done for optimal growth and recovery.