It's starting to become a more regular occurance now, and I just find it funny. I mean, I'll be in a skype call and I'll be talking and go into a fight. I'm probably not trying and just messing around with another player, and then they'll kill me and say 'eZ' after chasing me for around 3 minutes. I just laugh it off. Just think about it; they said 'eZ' because they were so filled with adrenaline from killing someone in a video game that they need to broadcast it to other players. Either that, or killing one person in survival games is a large achievment.
I don't see why people should take offense to it. If they're calling you 'eZ', they must have thought that you were a decent player and needed to sweat it out to kill you and announce that they killed you with eaZe. I don't imagine players say 'eZ' if they are relaxed while playing. It's something that induced by adrenaline or some kind of rush. Anyone who wants to start an argument without knowing anything beforehand doesn't deserve anyone's time. Just move to another server and forget about them.