His experience at OpenAI feels overly positive and saccharine, with a few shockingly naive comments that others have noted. I think there is obvious incentive. One reason for this is, he may be in burnout, but does not want to admit it. Another is, he is looking to the future: to keep options open for funding and connections if (when) he chooses to found again. He might be lonely and just want others in his life. Or to feel like he's working on something that "matters" in some way that his other company didn't.
I don't know at all what he's actually thinking. But the idea that he is resistant to incentives just because he has had a successful exit seems untrue. I know people who are as rich as he is, and they are not much different than me.
Also, keep in mind that people aren't the same. What seems hard to you might be easy to others, vice versa.
I don't know if this happens to anyone else, but the more I read about OpenAI, the more I like Meta. And I deleted Facebook years ago.
The fact that several commenters know the author personally goes some way to explain why the entire comment section seems to have missed the utterly unbalanced nature of the article.
I've always heard horror stories about Amazon, but when I speak to most people at, or from Amazon, they have great things to say. Some people are just optimists, too.