There’s plenty of literature, prepublication or otherwise, that can help you achieve your goals!
And I’m sure you can get an LLM to exhibit the same kind of psychopathic behavior with the right kind of encouragement.
But if you’re trying to get an LLM to write software or create marketing copy none of these “techniques” are going to help.
There’s no conversation going on with an LLM. There is just a single history of a conversation followed by the most likely response.
In a given context, they definitely do help. I have seen it happen. Many other people have seen it happen. Although I find it distasteful, you can try it yourself and see that it works (or in the case of specific patched methods, you can go through the history of screenshots and shared conversations that exists on the internet, for example posts on r/Bing and r/ChatGPT from the Dec 2022 to Feb 2023 time period).