I have the impression that most law firms consume and produce documentation by means of a cadre of paralegals who are minimally trained, minimally experienced, and maximally stressed by the pressure of deadlines and case loads. These paralegals are probably working to read hundreds of pages of legal filings and make sense out of them, and on the other end, they are working to produce as much documentation as possible and that's going to be by cut-and-paste assembly. So no, they are not going to understand stuff very well, and no, their output is not really going to be consistent or intelligible. But the managing attorneys depend on these paralegals to get anything done, just like Congresspeople rely on their staffers to actually read bills and draft legislation.

At the end of the day, I think these paralegals have been quite weak links, and nearly nobody will notice a difference in quality when it's all handed over to LLMs. But the paralegals will lose their jobs, and probably have nothing better to do than purchase angle grinders and cut down Flock camera poles, or crown the front hood of Waymos with a traffic pylon.