He is resigning from a job, what else should we think? If something really dangerous was happening he would be doing a whistleblower or at minimum talk to a lawyer. The thing is, the complete lack of transparency makes it hard to assess OpenAI and Anthropic. If they were quoted on the stock market, we could at least rely on some basic audits and reporting requirements.

There's no whistleblower program for this, they're not breaking any laws. What are you proposing he should do if not this?