One do wonder what NSA paid good money for if not for a government program which Google participated in.
I wondered if the comments in those slides about these companies "joining the program" were meant to be an internal joke. In other words, this could be internal NSA jargon for "screwed up their security badly enough that we were then able to wholesale intercept data going between their servers".
These latest revelations would seem to imply that no, it's not an internal joke.
"We won't lie to you, but we think this information should be public and if you knew what we know, then you'd be writing and calling your representative urging them to allow us to talk about it."
They could go even farther by passing judgement with the addition "... because what is being done in the name of the average citizen presents an existential threat to democracy and the betterment of a free and open society."