An aside: a couple replies to you mention “horcrux backups”, but that’s Horcrux 1.0, the kind that Voldemort disdains for their failure to preserve continuity of identity. I get the impression that Horcrux 2.0 is more like RAID, but RAID is not backup. It’s quite likely that now there are no backups and this was indeed a partial death.
An aside: a couple replies to you mention “horcrux backups”, but that’s Horcrux 1.0, the kind that Voldemort disdains for their failure to preserve continuity of identity. I get the impression that Horcrux 2.0 is more like RAID, but RAID is not backup. It’s quite likely that now there are no backups and this was indeed a partial death.