By whom? He seems highly credible to me, and his credentials check out, especially compared to hype men like Sam Altman. All youre doing is spreading FUD by an unnamed "they"

He only criticizes ai capabilities, without creating anything himself. Credentials are effectively meaningless. With every new release, he clamors for attention to prove how right he was—and always will be. That’s precisely why he lacks credibility.

He started and then sold a machine learning startup to Uber. He's also written multiple books about the construction of the human mind and he has a PhD from MIT. I would hardly call that creating nothing. He's not clamoring for attention, he's asking that AI be regulated and pointing out a lot of the glaring issues with the field.