Army PRT deviation from the outlined standards, your thoughts?

FM 7-22 has a pretty definitive PRT plan(s) and ways to go about conducting day-to-day PT. Why do you feel that senior leaders want to deviate from the guidance? Such as, time, standards and what will be done and not be done. I've been to 3 duty stations since the introduction of PRT and have yet to see it followed. Your thoughts on this?