Not a literal meaning. Fairly certain they are speaking from a story perspective that Draenor could turn people savage, however you won't actually get that choice. That doesn't mean Blizzard won't take that direction for everyone though.
If you like the concept, give SWTOR a try. You can be a dark Jedi or a light-sided Sith through the choices you make during your storyline.
It has it's bright moments. I'd say it's worth playing til level 30 or so when part 1 of your story completes. The combat system is not the greatest, but I enjoyed most of the story. For a free game, it's worth playing it for a few days.
I don't think they meant it literally. Being able to take different story paths sounds very FALLOUT (the game) ish.. Can't see them adding something along those lines to WOW.
because fallout was the first choicemaking game. Not to be an ass but get your facts straight son.