My opinion after hearing him on multiple interviews is that he always just says various generalities, he can be talking for 5 minutes and never say anything, all noise. I don't know if he is under an NDA and can't say literally anything about OpenAI and the future or if it's just the way he talks.
I had the same revelation when I read the transcript of one of his interviews with Lex. I found it to be so free of detail or substance that I wanted to make sure it wasn't just a one case of him having a bad day, but reading transcripts of a couple of more interviews confirmed my suspicion that he has nothing of substance to say.
That's not my impression from LeCun's or Carmack's (5-hours!) interviews. I would posit that, naturally, it depends on who is being interviewed, and that Lex also tries to keep the topics and their approach as accessible as possible.
That would be my bet. He's a CEO, I've not once heard it suggested that he's also a researcher (though according to Wikipedia he's a Stanford CompSci dropout). Quite rare to be competent at both CEO-things and the stuff you're hiring people to do.
