How does either of those example demonstrate email contents being used for ad targeting? What I see is just a more convenient UI for displaying what I've bought than searching for the individual receipts in the email archive.
There's just no ambiguity in Google's statements about email contents not being used for any kind of advertising purposes.
Google doesn't deny that it scans your email for information, it denies that it uses that data for ad targeting and profiling. Your links don't challenge that claim.
They have made very explicit statements about not using email content to target ads. So it's neither "known" nor "blatant".