I have no idea where anyone got the idea that a law degree conferred some form of superior literacy in the first place. Every lawsuit to which I’ve been a party has been rife with fairly basic errors. I guess the smattering of Latin and archaic usage impresses people. Me, I wanted to proofread it, mark it up in red and send it back to them with a bill for $175.00 an hour. It’s the least they could do for bleeding me dry.
Paralegals or legal assistants usually write the complaints. The attorneys are supposed to proof them, but often just sign whatever is put in front of them.