So what are you waiting for? There are no Clan members, so what? Delete the dead Clans. Why discuss how to do it? Just delete them, and there will be no dead Clans. Honestly, I don't understand why all this is necessary. You are the administrator, respected Hacker. If a dead Clan appears, delete it immediately. And there's no need to consult with anyone or discuss how to do it.
I think we should create a section about all the previously active Clans. Let's see what the respected Administrator says.
I didn't know where to write this: Respected administration, a user with the nickname "Allah" was registered on our forum. I ask that he be immediately deleted or renamed. As a Muslim, I find it unpleasant and disrespectful to this person. I hope you understand.