They're not slowing down anything. The cat's out of the bag.
What good does a few months lag do when nobody is bracing for impact?
What good does a few months lag do when nobody is bracing for impact?
Even ignoring the infohazard angle if they published everything immediately that would escalate the race. By sitting on their capabilities and waiting for others to publish (e.g. PaLM, Imagen vs GPT-3, DALL-E) they are at least only playing catch up.