Your attitude here suggests that you've been banned before for being a jerk. If that's the case, then the only reason you're complaining is because you don't like the fact that it worked on you. Show your reform card if you have indeed been banned so we can see what you actually said that got you banned.
Otherwise, how is telling someone that they're bad in anyway helpful to them? Answer, it's not, and in some cases may only make them play worse than they already are. It's not them being thin skinned it's you being a jerk. Don't be a jerk and you won't get in trouble, it's that simple really, or at least it should be anyways. If you do want to be a jerk, then don't come complaining here when you get punished for being a jerk. That doesn't mean the system is broken, that means that it's actually working as intended instead.