Stop the rear delt madness!

One of things that I can not wrap my head around is the overemphasizing of small muscle groups. Every day, you see people in gyms all across America pounding away with countless sets of curls, when they can not perform one proper pull up.
Do you really believe your arms will magically grow from the 17th set of 20 lbs curls?
In fact, I am going out on a limb here by saying that there is no shortage of curls in gyms worldwide.
The other idiocy, often re-inforced by trainers , is to excessively train the rear delt muscles. Now, there are people that need to pay attention to their rear delt. Category A: people with a rotator cuff injury, category B: athletes with high demands on their shoulders, throwers, tennis players etc and C: competitive bodybuilders.
40 lbs+ overweight people do NOT need 6 sets of rear delt training, it is simply that their trainers are lazy and want to kill 15 minutes of the session.
Worry about your squat, dead lift, overhead press and rows, eat your 7 meals a day. If you have done this for 15 months, you can start worry about auxiliary training.
Train hard
Maik