It shouldn't have to be explained to you why you were banned. You deliberately skirted the rules and you openly did it, on numerous occasions. Shooting at choppers and vehicles that retreat back into the uncap are fair game. It's always been that way. People may not like it, but the uncap is not a magical shield that you can use at a whim. However, it doesn't mean that you can hang out right outside the uncap and shoot at vehicles the moment they try and leave. "Oh, but they shot at me, then flew back into the spawn to evade my Stingers, so they're fair game!" as you hover in your parachute right outside the base is not a good argument. Baiting attacks like that is still toxic gameplay and isn't really that much better than just outright shooting the vehicles as people spawn in them.