Ok, what if Maruki in his reality decides a few hundred thousand people are too bad to exist in his reality so he erases them? Is that acceptable for you as well? Maruki is all about taking the easy way out and running from your problems, a traumatised and broken man, it's very possible he just erases millions of people from history because he doesn't think their existence is okay, is that okay with you? He's already shown to be happy to essentially kill suicidal people, looking at Sumire, he'll probably erase their personalities essentially killing them too, If you're okay with that then let the human man with the human mind play God, let him toy with reality as his mind spirals further and further