I've been unsuccessfully trying to get my account back for 7 years after a "joke" went wrong and someone replaced my profile picture with that of a decaying penis.
I realize Facebook can't just "start doing that" at their scale, and that my best luck would be to reach out to someone high-up enough in their organization.
So I've been starting to send monthly postcards from France both to Zuck's house and to random executives @Fb Headquarters with a very compelling story explaining how happy I would be if I ever got my memories back, and not just their stupid account backup file.