You know what? Everyone's first reaction is going to be to scold this guy, but this is the exact type of play style that Ubisoft wanted out of this game. They wanted you to have the freedom to do whatever you wanted in the game, so if that's how he wants to play (and they know exactly that people would play like this and encourage it because it makes the game live and fun and literally a risk and reward game) then that's the way that you have to play it and don't hate people for playing like this because this is just another way to play.