The mangaka most be an asshole that don't care about the logic of their world its make a almighty time loop power but don't care a shit about character progression, its feel like a seeing someone talking normally about they like videos snuff of the underweb.
In the ideologically theories of power of Isekais the authors just are assholes with the goal of easy morbid drama easy money, and in the stories its just to lazy to explain why the loophole but feels like a crazy lazy evil god just wanna rot away they power and the structure of their world