If OpenAI thinks someone should be the lead author for a paper, that person should have full discretion to decide who the co-authors are.
Even if the co-author's contributions were non-technical
So no, there's no world where you can ethically extend the right to publish a result and decide who the authors are from the outside.
> If true, that's generous and beyond the level of generosity one should expect
"We highly likely stole your work, and threatened you with 'this is bad for your career' and we refuse to acknowledge any work by your collaborator just because he works at a competitor, but we are so so so so generous"
Additionally, according to the researcher, OpenAI's proof follows the same approach they used, and which was largely unused in academia, but OpenAI claimes they arrived at it immediately.
Ain’t no way you read one 100 page paper let alone two with enough understanding to make such a claim.
You ought to be ashamed of yourself.
If true, that's generous and beyond the level of generosity one should expect. Extending that courtesy (beyond academic norms) to a competitor is expecting too much. It take a result OpenAI spent millions of dollars on, and put "Anthropic Researcher" right on the cover.
This is, of course, taking OpenAI's side of the story at face value. But it is a consistent, coherent, and ethically justifiable series of events, if indeed it happened that way.