The idea that somehow everyone would miraculously stop working with the LLM models that are out there because someone declared a moratorium is madness. That would be like saying a 6 month moratorium on malware development should be declared.
The only players who would keep developing would be those who recognize that the moratorium is pointless, or people who are already wanting to use the tech maliciously.
The idea behind GPT-4 is out there, it is something that is going to be reproduced regardless of what is discussed and unlike, say, nuclear weapons, it doesn't require a complicated infrastructure to implement and build. We need to continue to build this, and organizations with critical access to infrastructure and such need to take their security more seriously moving forward.