I think tptacek is using this non-issue to subtly discredit Glen Greenwald and Snowden.
This seems to be the entire issue to me with PRISM - whether it's an unprecedented level of access or merely a statement of what has known to have been going on, and what was covered under FISA, for years, but just in a more technically expedient manner.
http://media.hotair.com/wp/wp-content/uploads/2013/06/prism-...
Especially given the fact that the leaked documents specifically encourage analysts to use a range of tools (i.e. "You should use both"), he has no technical grounds for suggesting that such a minor semantic debate (between NSA and Google) discredits the claims of multiple people with first-hand experience of the NSA who are coming forward with claims of its abuse of power.