All I can tell you is that it is SOP. Typically, the non-financial administrative firm is responsible for keeping track of all things administrative and procedural. We (yes, my firm is a non-financial administrative firm) have learned through bitter experience to insert ourselves at every step to ensure that things are done properly. What can go wrong? Gosh, I could write a book (and I may just do that someday).
As far as identity theft goes, the non-financial administrative firm already knows just about everything about you. It needs to in order to accurately prepare governmental filings.
You should, if you had a peek at all the things that could and do go wrong, be thankful that the non-financial administrative firm is being pro-active and inserting themselves at a point in time where a correction, if it needs to be made, can be done before a problem develops.
I admit my opinion is biased, so I welcome others offering you a different viewpoint.