did you really play Sith Warrior? he is calm, his vocabulary is rich and sense of humour on a higher plane of intelligence than inquisitor. Yes, they do roar, at least make such sound ( force scream ), they are mighty and they choose to fight on the first lines because it gives them satisfaction. Being brutal is not dumb, when you see an ant, you can 1. go to your house, prepare anti-ant cocktail and pour it on ant 2. smash it, Warriors do not overthink simple matters, they thrive in possibility of reshaping flesh of their victims, of mutilating them, of hearing screams of agony, they feed on fear Being a warrior is noble and just, they are recruited mostly from the nobility and top notch elite.
You just point out that they try too hard to look hardcore.
IMO, diplomacy, stealth and resolve win wars, not symbolic theatrics and ego tripping.
Have you ever tried to get rid of an ant colony by squashing each of them individually? Go see how long it will take.