It's an interruption to your day when you're already trying to get shit over with. Imagine if you had to do a moment of silence every day at 5:00 PM. No matter what you're doing, you gotta stop. If you're having a conversation, stop that. If you're driving a car, stop that. If you're jerking off, stop that. If you're trying to send your last email of the day so that you can go get on the freeway and drive home, stop that. Now sit there for a bit. Now you can go back to whatever you were doing. Every day. Because of reasons. Look, I fought, bled, did all that shit. I was a good Marine. While this sort of stuff seems like it builds cohesion in the ranks, it was really just another one of those pains in the ass we put up with because we had no other choice but to put on the air of discipline, regardless of whether or not it made us better human beings.
What's gonna get her, though, is throwing that she doesn't give a shit (even if everyone else doesn't give a shit) in the brass' face. The one thing they cannot and will not tolerate is someone who is not only non-compliant, but who is a smartass about being non-compliant, and who is furthermore a smartass about being non-compliant publicly. She's in the United States Army... not on Private Benjamin or STRIPES. She doesn't have the freedom to be a jackass on Instagram, and they're going to make that very clear to her and everyone else.