Update July 23, 9:52 AM: Zdziarski has responded [Google cache] to Apple's posting of the support document, acknowledging the disclosures but arguing that Apple is downplaying the power of these services.
"I give Apple credit for acknowledging these services, and at least trying to give an answer to people who want to know why these services are there – prior to this, there was no documentation about file relay whatsoever, or its 44 data services to copy off personal data. They appear to be misleading about its capabilities, however, in downplaying them, and this concerns me. I wonder if the higher ups at Apple really are aware of how much non-diagnostic personal information it copies out, wirelessly, bypassing backup encryption. All the while that Apple is downplaying it, I suspect they’ll also quietly fix many of the issues I’ve raised in future versions. At least I hope so. It would be wildly irresponsible for Apple not to address these issues, especially now that the public knows about them."
Zdziarski also emphasizes that he has never suggested Apple is involved in a conspiracy to open up these services for surveillance - only that they could be used by those seeking to access such data.