I might not disagree with you specifically. It is not about disagreeing. Too often I would read, “my child is autistic, and he is the kindest kid ever, not a killer like this guy.” This is when I start thinking along the same line, that “autism” has become a wastebasket, compiling potentially different conditions. I see several problems here: 1) with the diagnosis being known, “incel-like behavior” might be projected on the nicest people, who, if anything, need to be protected from the society, not vise versa; 2) vulnerable and gullible people with autistic features might be “set up” as the perfect fall guys (it might have happened here, if indeed a different group planned the execution); 3) a tiny group of people with autism, a minority, may, indeed, harbor murderous thoughts, but perhaps, in them, something else is at play (comorbid mood disorder/seizures/psychosis/PD). In other words, such cases are seldom due to autism alone, but DP is the worst way to deal with them; surely science has better approaches to study?
The same, potentially, might apply to putting them in general prison population. Honestly, DP or not, depends on the state, not the IQ or developmental delay. Otis Toole had IQ of 75 and Joachim Kroll, 72. That they were not executed was IMHO, California in one case and Germany, in the other. In many cases comorbid diagnoses are quite likely. On the other hand, even developmentally disabled murderers might be deadly dangerous and the society needs to be protected from them. While I suspect that they have a certain concept of wrongdoing, IMHO, what really works against them is horrible impulsivity and frontal lobes dysfunction. Something better than gen-pop should be available.
To be quite honest, we don’t know his full medical history. Exopthalmos is too severe not to pay attention to it. In this context, “visual snow”, his presenting complaint a while ago, may be relevant. I don’t know if DM is reliable witness or whether she remembers events of that night at all, but if she does and BK, indeed, didn’t notice her, then something might be wrong with his vision, or vision fields.
It is a complex case, so when asking myself, what am I seeing?”, I don’t get a strong intuitive feeling. Autism might be just the tip of the iceberg.