Should we get rid of PT and just focus on AR 600-9. IMO I can get a better safer workout in 20 mins.

I agree in certain aspects. We want to tell soldiers that they are grown men and women, but hold their hands during things like PT. if a soldier can run 2 miles in 12:00, why should I make them keep running until the slow 20:00 min soldier finishes? How does that build morale? If you can't manage to keep yourself in enough shape to meet the standards, why should the Army keep you? Why should it be another adult's responsibility to hold your hand and/or tell you you're fat?
As far as unit cohesion, how is it civilian companies have workers that are happy together? They don't do PT. The leaders treat their workers with respect. They praise them for a job well done and correct improper work.
Now, about shame being a great motivator. I agree. 100%. But, the military has decided we can't make soldiers feel bad anymore. Leaders face so much PC backlash because "feelings" that we can't treat soldiers like soldiers. We have to treat them like liberal arts college kids. So, when you yell at an overweight person for walking, it could be YOU that loses rank while THEY get your job.
I pay for a gym membership and I get a way better workout from it. Having to take even more of my time to stay in great shape when the Army already takes at least 11 hours of it is dumb and counter-productive.

In my opinion, PT is much more than just working out. There was a time when unit PT instilled cohesion, esprit de corps, and discipline. It was not much different than any other Army training- It was planned and led by NCOs. It was another opportunity for NCOs to work together with their Soldiers, get to know them, and make them better. Where did that go?

The two---physical fitness and body composition standards--really go hand in hand.....both were designed to ensure a baseline standard of health for Soldiers, and both are really misunderstood. We should have a one-standard pass/fail fitness test for all (no age brackets, no gender-norming) and separate physical requirements based on job/MOS. This would take care of many of he problems associated with current PT programs. We should really, really focus on how PT is an individual responsibility (as is codified in regulation and doctrine) and make unit leaders responsible for creating conditions in which individuals can excel. On body composition, if we are going to keep/focus on body composition, we really seriously need to start using a scientific, accurate tool to take body composition readings---the tape test is a disaster. I prefer the bod pod, which the Army already pays for at Army Wellness Centers.