You might be reading the prompt far too literally then. LLMs interpret words not based on literal and rigorous definitions but based on how those words are actually used in reality based on a large corpus of text.
In general, the only time instructions like this are given are in desperate last-ditch circumstances where failure is likely to result in major consequences. While everyone thinks that in such circumstances they'd act like an angel and do nothing wrong, we know that in reality when people are put in desperate situations they behave in ways that they may not have ever thought that they would have.
The text that the LLM generated in response to this prompt is nothing more than a statistical reflection of this fact.