Earlier quoted context omitted.
> Facebook didn't really "delete" my old account, as after I rejoined it remembered many of my previous friends Do you happen to live in Europe, by chance?
He probably merely deactivated it and thought deactivation equals deletion. It does not.
Re: Ask HN: Did you delete your Facebook account in 2018?
#181It's been a few years, but I'm reasonable sure I actually deleted it and didn't just deactivate it. Or at least, that was the impression Facebook gave me. There was a big "you will lose all data!" warning as well as a cooling down period of a week or so, during which I could restore my account in case I changed my mind.