There's a difference between a personal argument and an argument in the vein of a discussion. Fighting is "you did this on x forum" "no i didn't" "shut up you did" "i did not, prove it, i could prove it but you're not getting to" "i don't need to i remember" "shut up". Thats the distinction.
You're not getting banned, that's way off. I'd far rather reach an equilibrium where we can be enemies at our podiums and friends on the floor than have to ban anyone, and I hope that we're all mature enough to achieve that.