I wouldn't doubt that lawsuits for employment discrimination for any company (and I suppose it was most of them) that used LLMs in hiring processes will become a very lucrative business. They are all open to civil suits at this point.
I don't see why its a problem to use LLMs to assist with legal work if someone else uses it in a way that exposes them to lawsuits. That's like saying you shouldn't using a ledger to do accounting just because some people cook the books.
Because using it to do shoddy work that harms people is the basis for the suit. If you're using it for the lawyering, too, how do you know that it won't do shoddy work in writing the lawsuit - shoddy work that could hurt the client?