According to Snowden't documents, Google is collaborating with NSA, so I think your point is moot.

No, according to the Snowden documents, the NSA spun up the MUSCULAR program specifically because Google was refusing to play nice. This was where they dug up dark fiber between Google data centers to tap into the information being sent between them. Within a month after the MUSCULAR leak, Google was encrypting all comms between data centers, which in theory, killed all the MUSCULAR taps.

Only if you trust Google that it was the only attack vector. I wouldn't.