I thought it was obvious but ok I’ll explain it to you. The story isn’t really about AI, it involves an AI but really that’s got absolutely nothing to do with the crime that was happening, so why we obsessing over it?

The guy committed a crime. And also as a separate event he used AI.

The AI did not enable him to commit the crime, the AI did not make the crime worse, the AI did not make the crime possible, and he did not use the AI to plan the crime. The use of the AI was entirely incidental to the crime.