This is maybe his first time when such tactic will be successful (maybe...we don't know if he managed to convince people to divest/not invest)

The first time he did it, well it was not effective.

It's not like people were not informed enough about war crimes. The Abu Grahib dossier had come out 3-4 years earlier.

People perceive this sort of stuff as far away, don't want to look at it or just simply block out the information because they want to believe whatever they want to believe.

Whistleblowing is ineffective to change the way a system operates. It solely make the system cover up better, and achieves the goal of having some heads roll (more often than not the responsible people for security and info compartmentization)