I agree that there's discipline/leadership and that there is abuse of power. But consider this. What's next in the "abuse" list:
Forced marches with a 50+ pound ruck sack. You don't know how far you have to go but you're being clocked against an unknown time. Is it 5, 8, 10, 12 miles? And then when you think you're done they tell you you're not.
Tear gas chamber on NBC training.
Sleep deprivation on a 10-day field exercise.
SERE/POW training. Food deprivation.
Jumping from perfectly flying airplanes at night in a mass tactical jump and hitting the ground with the force of jumping from a second story.
Learning how to handle firearms, bayonets and other hardware while yelling "Kill!".
The horror, where does it ends!