AFAIK logs should not contain personal data at all and backups ... you need to figure out a way to delete the already deleted user data when you restore a backup.

Interestingly enough. When I request to delete my data from HN, I would expect HN to send algolia (3rd party) a request to do so too. It should all propagate to even Google's search.

That's all like too complicated to implement and here ( at least ) in Berlin companies are in huge trouble about the details.