I'm sure you're right. It just seems crazy that there's no better way to do this. In my law practice, we electronically file documents with various courts and government agencies, and there is no other example I can think of where I can't produce a printable or computer-viewable copy of the final, signed, filed document. Most of those documents don't have wet signatures either - that's not really the point. But the general understanding in most contexts is that a document that hasn't been signed (whether that's a wet signature, typed signature, pin, digital-encryption certificate, or whatever) is merely a draft that may or may not have been changed before it was signed and filed.