Checkmite
Skepticifimisticalationist
Never said that it meant that.
What I said is that the only "why else" when diagnosing schizophrenia as per the DSM-5 is establishing whether it's the likes of drug use or neural damage causing the problem. NOT whether they read it anywhere else. E.g., if it turns out that the guy was tripping acid when they had the hallucination, hmm, you can go Occam conform and assume it doesn't need schizophrenia too as an explanation.
But that's exactly what I'm trying to explain to you.
The analogy to "acid" in this case is already-existing conspiracy theories and the communities that spread them. Getting involved in those things alter one's worldview and in so doing can induce morality shifts and criminal actions. I think this guy's beliefs and actions can be easily attributed to exposure to and immersion in those things, no mental health diagnosis necessary.
And again, that is not an exception from the DSM-5. To repeat myself, NOTHING in there says that it's only a delusion if you came up with it yourself. The wording in DSM-3 and DSM-4 was kinda allowing for that interpretation, but that's no longer the case in the DSM-5.
That said, if you really want to go into that tangent, I'll point out that he had to do SOME of the crazy logic himself. A CT site can tell you all about the reptilian elite rulers, but it's unlikely that it will tell you that Jane Doe, a random suburban mother, is one of them. The part where his wife is one of the shapeshifting reptile and passed that DNA to her children had to be his own inference. The part where he knew his children will be such a major problem to the world as to need him to kill them to save the world, also had to be his own inference. You won't find on these kinds of CT boards some prophecy that some random 10 months old infant is the one destined to destroy the world. He had to make that connection himself. SOMEHOW.
The reports have been that the man says his wife has "serpent DNA" and that she passed some of this along to their children who are supposed to one day become monsters. It's different enough from the usual Icke "shapeshifting reptilian aliens" jargon that I'm not comfortable automatically assuming that the father for instance believed they were necessarily "aliens" or that his children "shapeshifted". The actual reports don't go that far.
But aside from that, this is where the QAnon part comes in. You mentioned earlier in a post to someone else that you just can't see what QAnon has to do with this situation. Well, we know it is important enough to the killer himself that he told the police about it when attempting to explain his actions, so QAnon is obviously connected to his actions in his opinion.
But a unique thing about QAnon is, as I've explained elsewhere, it seems to have a knack for indirectly convincing its believers that their own friends and immediate family members are part of "the Cabal" or at least willing lackeys. I mentioned the case of Alpalus Slyman, a Q believer who concluded that his wife and 13-year-old daughter - a child herself - were sex-trafficking children for the Cabal. One of the first QAnon-related killings was a young man who tried to convince his parents that the pedophile Cabal was real and stabbed his father for arguing with him about it. Much more recently, the father of a survivor of the Stoneham-Douglas school shooting in Florida was convinced by QAnon that the shooting was a hoax and decided that his kid had to be "in on it". Yes, QAnon may not say in so many words that you - the person reading this - your spouse or kid is certainly a conspirator; but they certainly do say that it CAN be the case, they provide narratives of other believers who have "discovered" that to be the case, and they also provide a very broad-brush means of identifying "conspirators" that can easily make family members' behavior seem "suspicious".
So, if you've come to believe that the world is controlled by elites who are secretly "reptilians" and then you are introduced to QAnon which says those same elites also are members of a vampiric pedophile Cabal then you are already aware that the Cabal members are lizard-people; but Q goes further than Icke precisely because it "reveals" that it's not just elites that are part of the Cabal, it's common everyday people too - including, potentially, people you personally interact with and care about.