You'd be using at least 80% of max for all of those set/rep recommendations, and most likely working with 80-95% in some cases.
Over time, and if you don't vary sets/reps and weight used, you may have some soreness in the joints. It's to be expected. But at the same time, you can prevent soreness by training correctly, not training to failure, switching your set/rep parameters and not always trying to go "all out" with the weights. If you use proper post-workout nutrition and other aids (massage, contrast showers or baths, etc.), then that will help as well.
If using 80-90% of your max most of the time, you really shouldn't have joint issues. You may be sore in the beginning because your body is not used to lifting heavy weights. Over time, you will strengthen those areas and be good to go.
It's to build strength without packing on much muscle. It will help you get stronger by training the central nervous system and strengthening the joints and tendons while getting more efficient at using the muscle you do have.
Try it and see. The low volume workouts should be short and leave you feeling refreshed when you're done. You'll get strong quickly.