I've been waiting for an answer to this for days! Please, somebody figure it out!
Perhaps this article might shed some light:
WEI WU WEI ARCHIVES : THE TENTH MAN - 87
My interpretation of it is that consciousness has nothing to do with good/bad or light/dark, but everything to do with attachment and identification. For lightworkers, they would give of themselves so much that their identification and ego-sense dissolves into All-that-is, whereas for darkworkers, they would take from others so much that their identification and ego-sense also dissolves into All-that-is by virtue of having so much power under themselves that their sense of "I" includes their entire environment.
Theoretically it makes some kind of sense, but I still can't get myself to believe it, lol