They only signed that to pull the ladder up after they have a mass adopted model to lower competition. Nothing about that is about concern for humanity, it's about lowering competition to strengthen their moat.
Now that sam is out and his new ai startup if he makes one will be a new entrant in the ai space, he probably should have waited a couple weeks before recommending all the ai regulations.
As an aside, i would support a system like the patent system where if new ai models are going to be heavily regulated, then the uncensored/pre-gated weights of the already launched model should be released to the public in much the same way your patent idea is protected but you have to release the design in the application.