First of all, if you connect to our server with the idea to go and piss of the enemy you're wrong to begin with.
You claim to know how to hit close to the edge of what's allowed. If you stay within those margins, you're fine. But you're playing with fire by choosing to aim this close to the allowable. Tip: when setting up your mortar it might be better to start aiming further away from the edge and move your way up to prevent warnings.
It's already explained a couple times, but since you didn't (want to) understand, I'll repeat it again. The sk script is there to help us spot players who often break the rules. Just because the script doesn't auto-kick you untill you break the rule 3 times in a map, doesn't mean you get to spawnkill 2 times every map without consequences. All your warnings are being logged in your personal history list and like Ande said, your record is huge. At some point we have to step in when there are too many warnings. Jessica was actually very nice to ban you for just 1 day, because it's usually longer. I bet this ban was done to get your attention and look, it worked. If you continue to break the rules and your history builds up even further, you will be banned again (and longer).
You're free to search for the edges and limits, but don't be surprised if there will be consequences if you go over the edge. Many times.
It has nothing to do with you personally. Like Flo said, it's purely based on facts. Your history doesn't lie.
Calling someone an admin abuser for banning you 1 day because you've had over 200 warnings is actually quite hilarious. It's not like we kick, ban or do whatever command for fun. And we certainly don't feel like gods. In an ideal world we wouldn't even be needing these commands, but we've got to maintain a fun and playable server for 50 people. Sometimes we have to step in. You're always free to go if you feel discouraged, you will be deeply missed. And finally, you can joke around all you want about the kicks and bans, but in the end the joke is on you.