Do NCO's know that some of the things they do effects soldiers on how they would become non commissioned officers in the future?

EDIT: The use of the word YOU in this response is not pointed to anyone specifcally .. I know nothing of SPC Cortez Beaver and as I would any SM I have not yet observed personally, I assume professionalism and a desire to do it right..

"Do NCO's know that some of the things they do affects soldiers on how they would become non commissioned officers in the future?"

We absolutely know that, and it is why we make you do the task again, and again until you get it right. Knowing full well you will bad mouth us to your peers and social media.
We know that if we let you walk around out of uniform, that will set the new standard and it is what you will lower yourself to in the future as an NCO.
When you get a DUI, even though you and your buddies feel you are a GREAT SPC, we are recommending to the commander to separate you.
Its the reason we harp on you about being on time, prepared for the day, duty or task.. not 5 min late or on time but not ready to work.
We know that if we allow you to NOT fix that private standing next to you talking crap about another NCO who had him go to the end of the line in the PU event when he failed to do the first 10 correct... you will consider that the NORM.... we will correct the PVT, then take you off to a corner and correct you.

We absolutely know that everything we do, in front of, with, to you affects how you will become an NCO...and that is why many do not "like us" and decide not to reenlist..and that is ok..Service and its needs are not for everybody.

All that said, two things, YOU was used as a generality, not specific to any one person, just to whom it apply to... And... Understanding the military is made up of everything from your hometown has to offer..... mostly great americans, but also murders, rapist, thugs and thieves.plus sometimes just plain mean people. So some of those lesser qualities will find themselves into the Officer and NCO ranks, as well as the enlisted ranks..... We try and separate them , but still some slip by.

You break the chain by taking what those good leaders you have and what those bad leaders have and you make your own style of leadership. But to break it down even further....you stop it at the VERY LOWEST level possible. If your team/squad mate is constantly badmouthing NCOs for any kind of perceived wrong, correct your team/squad mate and tell them to stop because all they are doing is making a situation worse. You know the standards that are to be met, so meet those standards and be that example for your team/squad. And when they see that you are not the one getting singled out, then they will (hopefully) change their tune and start towing the line. Do what you are supposed to do....be where you are supposed to be and in the uniform you are supposed to be in and things will be gravy. Will there be suck? Yes, it's the Army...there will always be suck. Embrace it and move forward.

True, there are a lot of NCO's that "abuse" their authority because of the way they were treated as a lower enlisted, but the best answer would be to take positive aspects from different GOOD leaders and apply them to your own leadership style. That's what I try to do.