This is a nice tool but orphaned images still need to be purged. Mentioned on the other thread that bad actors can upload spam to fill up object storage space.
Except admins need to go through the database to catch it. Mods can't catch it. Admins without access to the database or object storage can't catch it.
I'm not on GitHub. Someone else can submit it this and I'm very sure the Lemmy devs are aware. They just have different priorities.