How can you make an accusation about illegalities when you have no first hand knowledge of the event?It doesn't really bother me if the whistleblower wasn't actually on the call. In any organization, people talk. Someone can have a reasonably good idea something happened without actually being present for it.
It does go to credibility, though.
And if the complainant said they were present for the call, but they weren't, then that totally destroys the credibility.
Add an anonymous leak of the story, and it smells like a hit piece.