I don't think categorizing as "aggressive" and "unaggressive" (or rather "complaisant") properly defines it. I have had lucids where DCs gently try to get me to loose my lucidity. For example, in one dream I wake in my bedroom and realize it's a dream. My significant other DC tries to get me to go back to sleep. I try to slip away without bringing up lucidity, but she says if I think it's a lucid dream then I must have messed up reality checks and that it's not a dream. Then adds that if I must go then be it and that she was going back to sleep. It was a gentle and comforting way the dream was trying to get me to give up my lucidity. There was no hostility or aggressiveness in it, it was almost passive.