Well, I still disagree. In reality companies still retaliate against whistleblowers even when the information is already out there. (Hence the need for Congress, federal courts and the California Supreme Court to clarify that whistleblower activity is still protected even if the information is already known.)

I, of course, am not proposing that OpenAI assassinated this person. Just pointing out that disclosures of known information can and do motivate retaliation, and are considered whistleblowing.