> Autonomous weapons would require a much faster and much more reliable and deterministic AI. 

I think this is only true when the bots are on home-field, and you don't want to kill your own ones. When you are on the other side, you just want to shoot indiscriminately everything that moves, and monitor your surroundings to protect yourself. For this, today's LLMs seem to be more than enough. And since there was no human intervention in shooting everyone, it's not even a war crime.