I agree with you that current publicly available LLMs do not pose an existential risk to humanity. On the other hand I believe there is a better than 10% chance that the cutting edge LLMs of 2044 will be very powerful.
Do you believe (A) that LLMs are unlikely to become powerful in the short term, and/or (B) that if LLMs become powerful, then they are likely to be safe even without a significant and concerted alignment effort?
IMO even if LLMs are extremely unlikely to become powerful in the short term, then I still might be better off if LLM development is banned, ie:
P1: Humans are close to developing powerful non-LLM AI systems.
P2: Humans are not close to developing techniques for safely using powerful AI systems.
P3: If governments ban AI development, then the speed of AI capabilities development will be significantly reduced.
P4: It is a waste of scarce expertise and political capital to focus on making an LLM carve out in AI regulation legislation.
C: If it is extremely unlikely that LLMs will become powerful in the near future, then I am made much better off if governments ban all AI capabilities research (including LLMs).