I usually like to express my opinion through comedic ways, because I think that helps some people understand your thoughts on an issue. Maybe like how he advertised to "eat someone", the guy could have confused it with sexually, instead of psychically.
But I read that article, and seriously, I don't get it. I mean. The hell? This actually HAPPENED!?
Regardless of the idea of a crime (even though I believe assisted suicide SHOULD be a crime, regardless of circumstances), this man has had a taste of blood and flesh. His already deteriorated state of mind, added with this cannibalism act is only going to spell trouble later. When you have the taste of something you like, you are obviously going to want more. While a rational person can curb their impulses on regular foods, it seems this man didn't have a stable mind from the start (with his childhood), so its only a guess in the dark if he can control the impulses. It may not happen soon, but if he had the urge to eat someone else, what then? [just because the first one has a "deeper" meaning, won't mean the next one will]
Whether or not he is convicted of an actual crime (murder of the person), this guy belongs in an asylum.