I think all researchers and science communicators have a duty to present science in a way which educates and edifies, and doesn't mislead. It's not just that they're successful, but that their publicity gives them a prominent role as science communicators. Science is all about and questioning your assumptions, and acknowledging limitations. They claim the public interest in their charter. I think it's reasonable to demand integrity from them, at least as much as it is from any other researcher, if not more. And I think OpenAI would agree with me on that point.
It's easy to say: they 'have a duty to present science in a way which educates and edifies, and doesn't mislead'. But sometimes it takes years even for scientists to really understand what they have created or discovered. It's cutting edge, not well known, hard to communicate. How could lay people keep up where not even scientists have grasped it fully?
Of course, if the same scientists were asked about something where the topic has settled, they could be more effective communicators.