Originally Posted by
s3ge
I actually think this is one of the more baffling claims that have come up recently.
Let's assume that the Void is directly talking to Alleria - which is most likely not the case-, the whispers are not just a manifestation of her infected subconscious but a direct message and, for that matter, somewhat true.
To get from this point to "... therefore Sylvanas is evil, even the void confirms it!" requires some serious stretching.
The Void has been our and the Legion's enemy since Blizzard decided to make it up. Any good or acceptable outcome for the Void means horrible consequences for everyone on Azeroth and to some extend the entire universe. If the Void sees Sylvanas as the true enemy that means that she is clearly on the right path and anyone who opposes her is in the wrong. This includes, no surprise here, the entirety of the Alliance. If you want to take the whispers as gospel, and we really should not do that, than the Alliance is evil, because it somehow helps the Void in accomplishing its goals.