That's the whole reason I refuse to install Google Drive or Dropbox's desktop applications. I only use the web interface so I know exactly what gets uploaded and when. I assume that anything running on my computer gets access to everything.
So, Google "backs up" a 128Gb worth of photos on the phone onto 15Gb free storage combined with Gmail and who knows what, completely clogs it (as if it couldn't be predicted) and then has audacity to suggest paying for "extra storage". There is no way in online UI to just delete the whole "backup". And the cherry on top: when you finally get to delete some there is a fine-print - "the selected photos will be deleted from all synced devices". Well, I guess I must be thankful that they at least show this warning. This is what passes as "backup" in Google's parlance these days.
https://www.thetimes.com/world/article/google-bans-father-ov...
> Mark, from San Francisco, had noticed swelling in his son’s groin and used his phone to photograph the problem to get an emergency appointment in February last year. He shared the pictures with a nurse so that a doctor could review them.
> However, Google’s artificial intelligence system used to detect child abuse flagged the image to the police and Mark, a software engineer who asked to be identified by only his first name, was investigated and lost access to his Google accounts. He was exonerated by the police in San Francisco but his Google account has not been reinstated.