What if you'd die from a genuine accident?
This guy had plenty of money for a therapist to help with his mental health issues.
What more do you think we could we do for them?
Publicly making claims and being named as a potential witness in a court case seems a clear line.
F.ex. the resources listed on the US House's Whistleblower Ombuds page: https://whistleblower.house.gov/whistleblower-support-organi...
So why didn't I immediately publish it all while alive? Perhaps I preferred to control the flow of information, redact certain parts, or extort the organisation I was blowing the whistle on. None of those seem all that important to me compared to deterring people from assassinating me in the first place.