That doesn't mean her stuff is useless. I can think of situations where a law firm might well choose Miers over the least talented summer hire intern to author a particular piece of documentation--answers to interrogatories, for example.
I can envision an opposing law firm assigning ten lawyers at $500 an hour, 60 hours a week, just to decipher and make sense of the mess, only to give up when their client's retainer and bank account ran dry.
I still say she was writing down to her audience. They're lawyers.