This sounds interesting: "Periodic cleanup. Mouthful allows for periodic cleanup of non-confirmed and soft-deleted comments" — I like that. So if the blog author goes for vacation, and people start posting weird things, then, when the blog author doesn't approve those comments, eventually they auto disappear? Until s/he is back and can review?

What if someone posts reply E, and someone else post F which is a reply to E. Then, E gets soft-deleted, and the author is tired and sees only F and approves F. Then what happens? With E? It appears as "hidden, click to show"? Or both E and F are gone?

You use it or you're one of the contributors / source code authors?

Do you know why the people are building this tool? What's their goal / vision / why did they start? EDIT: I found the answer: https://dizzy.zone/2018/04/19/I-made-my-own-commenting-serve... — apparently mainly to have a commenting system that uses less memory: 7 MB, vs Isso: 50 MB RAM.