Honestly, you're in the wrong on both and I feel like your message should be switched to something that is more direct at the start of the message. Here is my message: "YOU ARE IN BREACH OF PRIVATE AIRSPACE! Autohover IMMEDIATELY and await further instructions! Failure to comply will result in death by TITAN." Your first message doesn't have to have instructions for every type of air vehicle possible, but just a brief engagement that applies to all air vehicles and then do a follow up for instructions if they actually comply.
First clip, you didn't even give them time to comply and you clearly see them start their hover before you shot. You should only shoot if they dive down or flare. Since that would be considered an evasive maneuver. Flying up is not evasive AT ALL. This one is really the fault of your lengthy message.
Second clip, you are completely in the wrong and Marcus was right to ban you. Just because someone slightly drifts does not mean they are evading. Although they slightly drifted, there was no vehicular movement that suggested an evasion attempt. You just shot cause you thought you were right within the rules...