I hear you. I used to think (and still do mostly) that an intelligent person need not swear or raise there voice to express themselves so when I went from an NCO to an officer I tried that approach for a bit. I found that dealing with riflemen required me to go straight back into NCO mode more often then not.
Swearing is okay. Public execution is not. Public execution causes people to entrench. It's a horrible management style and accomplishes nothing. It has no place in training.
What the F were you thinking? - that's oky.....
You F--- Idiot. - Not cool, and not professional.
Instructors are expected to be role models, have demonstration quality skills, be alert for problems, and anticipate potential problems before they happen. They should always err on the side of conservatism when planning and executing dives.
With practice my A-mode radar will get better when it comes to diving. A-Mode Radar is my internal process for detecting and avoiding A-Holes.
Unfortunately, I have to run into a few of them before I'm able to fine tune the early warning signs.
It's often the little things that alert you to the "not right" attitude. The instructor was pretty proud of his DAN first aid kit and DAN mini-oxygen kit that he brought to the dive site. He was talking about them with another instructor and I was nearby so I asked a few questions. He acted like he was put out that I even knew what the stuff was. He resisted a bit when I looked in the oxygen kit. He got annoyed when I asked how big the cylinder was and how long it would last. It was a small cylinder that would last about 20 minutes. 20 minutes is fine, but you've got to be out of your mind if you think EMS is always 20 minutes away at Lake Travis or in Houston. Unless you tell 911 you have a dead diver they may mistake it as a minor incident and take their time to get there. Anyhow, that registered a "hmmmm not right" with me. He should have asked what I knew about them at which point I would have told him I was mostly done with DAN DEMP and had finished Hazardous Marine Life, O2 provider, and Advanced O2 provider. In short I elected to take DAN Demp because I think it's important to be well versed in first aid while diving. It helps me take better care of myself as well as my buddies. Anyhow, this instructor taught my EFR course and I distinctly remember a couple of offensive remarks in that class. "AED's are easy to use and we don't cover them in this course. If you want to use one you need to take the class" WTF? "We don't cover Oxygen, you can take the class if you want to learn about that." Excuse me? I just didn't consider those to be serious enough deviations to blacklist him from my training.
However, as they say, hindsight is 20/20 - even if you are picking shark teeth out of your ass.