It is not designed. It is 'grown'. It has agentic freedom of choice in finding solutions that may or may not be aligned with what you want.
Here's the thing, by your own statement, we should ban all development on LLMs from this point on. They cannot be made safe. This is a systemic issue with learning systems, it is not about who designs them. All the problems with AI safety have been laid out for years and none of them have proof of solutions. It's much more likely they are impossible to solve. And it's not an engineering problems like we can get an asymptote to safety in planes, as the system becomes more capable it has more degrees of freedom it can take and becomes less safe.