[sugavaneshb]

This is clearly for clickbait. Only your voice search commands are recorded just like the history of what you searched using Google or your browser history.

[lucb1e]

The article speaks in "may"s and "might"s a lot, I can't find one concrete point outside the title, besides of course "after activation by speaking OK Google your audio is sent to Google". It seems to be clickbait indeed.

[CaptSpify]

Could they be? Sure. Are they? We'd need some kind of evidence, not speculation

[p4bl0]

That's not true. A friend of mine found some random bits of conversation too (he says approximately 90% of the recordings are actual search).