It's really not that hard to just follow the rules. Obvious as it is, the warn system is there to tell players that they are breaking a rule and that they need to stop. That's the entire reason why they get banned from it. If you have gotten 15+ warns and were banned, then you need to take a step back and think "Hey, I might need to stop breaking the rules" if you are wanting to stay on the server. Otherwise, people will just get banned anyway and won't give two shits about it.
Removing this feature on the warn system wouldn't be the best choice as it has stopped a lot of people who have broken the rules. Some make it to 15 and stop. If that doesn't stop them, then they'll eventually hit 50 and be permanently banned.
And like a lot of people who commented here, they all have been playing for quite some time and yet most of them have very little punishments because they actually follow the rules. You're not guaranteed a warning unless you actually did something to break a rule. If you do get a warning that's complete BS then definitely report that.
Fortunately for old time players, you will soon be able to get your old warnings removed.