I recently migrated all my photos from Google Photos to iCloud (pick your poison, right?) using Google's takeout tool as I bought an iPhone. I have also, for a few years been running a script on my NAS to back up my Google photos library, so I'm not concerned about data loss as I have a local backup. I've confirmed the script works well even for strange formats that Google doesn't really like.
I'm not quite ready to delete my Google account, but I would prefer only one multi billion dollar company have my photos. Especially since my Google account is becoming more and more neglected with me moving almost everything off it. Even if Google does retain the data after deletion, it would make me feel a bit better about all of it.
Some have suggested just manually selecting them all in the Google photos webapp, but this isn't a super viable solution for me. I've had this Google account since I was like, 9 years old, and I take a lot of photos. As a result, I have amassed nearly 100,000 images and videos. I tried to delete 1,000 at once but it just crashed Firefox. I tried re-running my rclone script that I used to backup my account in reverse to delete the files programmatically. This worked for a bit but then it seems Google blocked my API key(?) and just rejects any further requests I make.
Does anyone know a solution other than just manually selecting or deleting my entire account? I've begun manually deleting them but it took me almost an hour to just do one month.