Okay Cobra KaiYes it is. Fighting is fighting.
What the hell do I care if my powerlifter friend is a scumbag or a noble pastor? It's the gym. We all only care about his strength. If he is civil and law-abiding and not harassing people, he can do whatever the heck he wants.
Assault, attack, combat, fighting, force... Call it what you want. Just no matter what you do, don't insert spirituality and philosophy into it. Philosophy is above that.