This reminds me of a discussion I had with my partner about "The Substance" (and I promise it will come back to your post's point).
I watched the film with some of my Film Nerd friends and we all agreed that the point of The Substance was that it was a personality test. If you are the kind of person who would use The Substance, you will always misuse The Substance. If you are the kind of person who would never use The Substance, then you would use The Substance correctly. But it wouldn't matter because you wouldn't use it.
The clarity of the directions given in the film are mostly for the audience to understand the stakes. The Substance could have come with a manual as thick as a King novel and it wouldn't make a bit of difference to the story, because anyone who'd use The Substance will misuse it and would not be saved by incredibly detailed directions.
Then I watched the film with some of my more casual movie friends, ones who are learning about film theory and storytelling. And I started to talk about this dichotomy in the chat, only for one of them to loudly and smugly announce: "I would simply use The Substance correctly and live forever! I would never have a problem! I would follow all the rules!"
Which... no. You wouldn't, and the fact that you would even SAY that with no self-awareness makes me a little nervous around you.
I still haven't seen Death Note, but I am well aware that this is also the point of Death Note. The kind of person who would use a Death Note will always misuse a Death Note. No exceptions. The kind of person who would NOT misuse a Death Note would handle it correctly, but that's because they'd never use a Death Note. No exceptions.
The kind of person who says "Oh, well, why not kill Hitler with a Death Note?" is the most dangerous kind of person to acquire it. Because they're the personality type who simply, easily, casually, turns everyone they don't like into Hitler.