> Normally the word "whistleblower" means someone who revealed previously-unknown facts about an organization.

A whistleblower could also be someone in the process of doing so, i.e. they have a claim about the organization, as well as a promise to give detailed facts and evidence later in a courtroom.

I think that's the more commonsense understanding of what whistleblowers are and what they do. Your remark hinges on a narrow definition.