I disagree. I'd immediately have a ton of questions for most ex-OpenAI and ex-Anthropic people as my default position would be "poor business/economics judgement in role, chose to ride a hype cycle, now sat in front of me for a reason".
I'm not saying it's toxic to have it on your work history, but it's far from gold plated. They'd have work to do for me, and for many, many people in the industry, to prove that I'd want to work with them.
Are you a hiring manager?
You are not in a position to hire them, let alone at a big interesting company. Forgive my bluntness, but your opinion doesn’t matter to their situation.
When I say their resumes are gold-plated I mean at the companies they want to work at.