I did the same thing, and yet every couple of years some of those deleted items reappear on the news feed of my second account that I only use to double-check my privacy settings.
It's an European account and I'm wondering if only marking the content as deleted, instead of actually deleting it, violates the GDPR.
Can you report that to the privacy regulator in your European country? The "mark as deleted" versus actual deletion is an important distinction. I can't do anything as a non-European...
I was planning on looking into how to best document it the next time it happens, and whom exactly to report it to (i.e. the national or European data protection authority). Not sure if there is anything else I could do.
It's an European account and I'm wondering if only marking the content as deleted, instead of actually deleting it, violates the GDPR.