Can you clarify what you mean by "coded" perma-death?
The perma-death requirement is simply that a character can be killed without the consent of the player behind it. We've never said someone has to die every day on your game or anything else. While it is almost impossible to die in Sindome, you can be killed against your will. I'm unsure why quantity is relevant? What if a game has perma-death and code but no roleplay? They'd claim the roleplay was arbitrary too.
Some statistics Sindome Provided on OR
If you scroll down they show their newbie death % , while it is almost impossible to die on Sindome you can still die due to bad luck or people directly and consistently targeting you. Savvy players can simply minimize their risk of perma-death the longer they live requiring a more concerted effort to perm them.