I agree with the intent but not the method here. I think the fediverse usually waits for activity before proceeding with its usual systems and that should probably apply here.
I say, if a magazine has zero activity after the first month, it should have a public flag on it "Inactive" when someone visits. If someone wants to take over, they'll automatically get control. But I think it's okay to leave the space for people to post there, without necessarily assuming they want control over it too.
I think inactive moderators should be handled slightly differently. One month seems too short to demote them. I say if a magazine has had no moderator log in for 3 months, the magazine is marked "No Leadership" and anyone who asks gets promoted, but let's leave the demoting or deletions to real humans to review and commit to.