i did it for a few years, had good results and no specific injuries that could be attributed to this program that training hard in general wouldn’t cause. i do have some elbow issues, always have always will.
it was a bit different back then though, similar but different.
the way i remember it, using chest for example was,
1 flat/ incline: 2-3 (working) sets 4-6reps
2 incline/ flat: 1-2 (working) sets 6-8reps
3 decline/ dips: 1-2 (working) sets 6-8reps
4 flye/ pec dec/ cable cross: 1-2 sets 10-15 reps
you wouldn’t do all max number of sets, if using 3 working sets for the first exercise, i’d only use 1 (working) set for each of the remaining exercises.
only take the sets to positive failure, no forced reps, if you can’t get at least 4 by yourself (and that means your spot does not touch the bar at all) the weight is too heavy. i’d try to only take the last set of each exercise to failure
the biggest (& hardest) part of this program is leaving the gym (reletively) fresh. do not do just 1 more set, because you can, less is more (but get at least 5-6 working sets in).
the deloads are also vital to keep you fresh, if doing this program properly, you will burn out very quickly, i disagree with Pologazz, that you will revocer faster. but that may be an individual thing.
you’ll need to know your body, i personally prefer a greater variety for my back less sets per exercise but more exercises, while for other body parts, i prefer mutliple sets and a rotatation of exercises week to week.