If you can wander in your opponent's DZ and shoot EVERYONE in the back without needing smoke to hide you should probably take the time to teach him a thing or two about deployement...
Buddy, I have been trying to convince people for years that it's the kind of interaction that will give some players a very negative experience and shouldn't be a thing in this game. However, the hordes of armchair players that don't have a reasonable bone in their body will never come around to this. And the players at the receiving end of an actual game are bullied into agreeing with you in order to save some face, but only in the moment. You really have to pick your battles on this issue.