There is a big difference in publishing a story of an incident that was done openly by a then powerful ruler and the stories that are surfacing since he's fall. Saying a man was a womanizer and claiming he was a rapist is two very different things.
Regarding his position as a Muslim many of us Muslims were very much aware of his situation while he was living..many Islamic scholars already issued verdicts on his status back then. But now that he is dead and gone he's final abode and judgement belongs only to his Creator. Where-else its those who killed him who will now have to face the world as to whether their actions were unjust or right.