Regardless of advice quality, legal proceedings aren't free-to-play, and the adversary in question here has bottomless pockets.
FFS, we're already at the edge of having to pay to know what the laws even are. [0]
[0] https://www.eff.org/deeplinks/2022/03/pro-codes-act-wolf-she...
The best legal professionals, just like the best software engineers, have wholly embraced LLM assistance.
"Gee, we bill $700/hr but just can't figure out how to put a prompt into a chat interface." Please.
LLMs have been making so many mistakes that the big firms have slowed or even paused their LLM spend. And that was before CA passed a law relating legal AI use.