An article about Dahmer would be about his killings, not his sexual orientation unless it was some anti-gay publication that thought the sexual orientation and murders were linked. The thread title of OP summarizes the first paragraph of the article he linked to. You seem to be missing the spirit of the rule, yet you posted Wu's concise explanation.
If you truly believe that the two titles you reference above are equivalent, it is best that you stick to your previous impression of the rule when creating threads.
You asked me my thoughts about the "gist" of the article matching 403's title. The "gist" of a Dahmer article is that a homosexual killed and ate people. Doesn't mean the thread title should be anything other than the article title. It's blatantly obvious that 403's intentions were to associate Republicans with wanting to kill Obama. Sad if you choose not to see it.