Give me the Death Note, I can be trusted to act rationally. The only “undeserving” to end up on it would be people who step through Metro doors and immediately stop, even though there’s people behind them.
More seriously I know the author has said it’s about power corrupting, but if that’s the story he wanted to tell then he should’ve chosen a different protagonist. Its also a silly mantra, we do not live in a Tolkien novel, power isn’t some supernatural force.
I don’t think anyone is 100% good or 100% bad, or that a single factor in isolation reliably flips them from 100% good to 100% evil, no.
I just think outcomes are more sufficiently explained by looking at material conditions and systems larger than one individual’s actions or immutable characteristics determined at birth.
(In fact, I kinda thought the whole “systems and material conditions vs. individuals and immutable traits” thing was basically the philosophical origins of communism vs. fascism in a nutshell.)