I think theoretically, it's okay for LLMs to write legal briefs, to replace attorneys. Write the best argument you can with whatever tools you want. What worries me is the idea of them replacing JUDGES.
That's actually the plot of Minority Report, a lot of people think it is about "what if computers could predict crime" but it is really about "What do you do when your 'omniscient' machines disagree with each other".
Either way the idea of getting sent to prison and having 0 human interaction is terrifying.