You have been deeply unpleasant to the OP and you have accused me of being disgusting for raising a highly relevant recent report which discusses this exact point.
I can find some relevant quotes if you like which say EXACTLY what I'm saying. Is the Southport Report ablist? Really? You've clearly not read any of it - you just think it's about the attack itself and not wider failures and concerns.
Inquiry chairman Sir Adrian Fulford found "catastrophic" failures by the parents of the Southport killer and various agencies meant clear chances to prevent the 2024 child murders were missed.
In a 760-page final report, Sir Adrian called for the end of what he described as a "culture" of agencies passing responsibility between each other or downgrading their own involvement in cases like this.
The findings of Phase 1 will shape the focus of Phase 2 of the inquiry, which is expected to start later this year.
It is expected to consider the adequacy of multi-agency systems to address the risk posed by young people whose fixation with and desire to commit acts of extreme violence presents a significant risk to public safety.
https://www.bbc.co.uk/news/articles/cp86e615j68o
The OPs brother has a fixation, he has used violence and he has made threats to the wider public based on a completely irrational fixation. He is ticking these boxes.
Inquiry chair Sir Adrian Fulford described the "sheer number of missed opportunities" as "striking".
The report found that "no agency or multi-agency structure accepted responsibility" for assessing and managing the "grave risk" the attacker posed.
When concerns were raised about AR's behaviour, the report explained there was no individual or body with a clear responsibility to ensure the risk was assessed and prevent it.
While it said all those involved acted in good faith, the report suggested the "merry-go-round referral system" meant AR's case was passed from one public sector agency to another.
The inquiry outlined how critical information had been "repeatedly lost, diluted or poorly managed" as it was passed between various agencies.
This meant that the significance of earlier incidents of violence were "seriously underestimated" and opportunities to intervene were lost.
A number of examples of AR's behaviour are listed in the report, including information around his intention to bring a knife to school and an incident where he assaulted his father.
The most noteworthy example concerned an incident in 2022 when the attacker went missing and was later found with a knife on a bus, admitting to police he wanted to stab someone, the report acknowledged.
"Had the agencies involved in this episode had a remotely adequate understanding of AR's risk history, AR would have been arrested on this occasion," the report said.
It added that his home would have been searched and further critical information about his internet history found.
The report said the Department for Health and NHS England should review risk assessment processes for children and young people, and consider whether national guidance is required "to ensure clarity about who is responsible".
'Misunderstanding of autism'
The attacker's previous conduct was "wrongly attributed" to his autism spectrum disorder (ASD), the report found.
It said this mistake ultimately resulted in a failure to address his previous behaviours.
The report made clear that "it would be entirely wrong to make a general association between autism and an increased risk of violent harm to others", but said that AR's ASD characteristics means his autism "does carry an increased risk of harm to others".
Instead of recognising he was responsible for his own actions, the report found that agencies "regularly used his autism as an explanation or even excuse for his conduct", which was "both unacceptable and superficial".
Training for Prevent specialists should be strengthened to ensure they understand autism, the report found.
It then goes on to say
"AR's parents faced significant challenges, but they were too ready to excuse and defend AR's actions; they failed to stand up to his behaviour and set boundaries," it concluded.
The attacker's father is described as being "difficult" in cooperating with authorities, which included an "outright refusal to take legitimate professional concerns seriously".
The report accepted that this lack of cooperation was partly down to a "dangerously short-term desire to prevent AR from having a violent outburst" which would often be directed at his father, and was therefore "understandable".
Ultimately, "the parents' desire to minimise the number and frequency of AR's outbursts became a factor contributing to a far worse outcome".
If his parents had reported this information before the 2024 attack, he would undoubtedly have been arrested and he would either have been taken into care or held in custody, the report explained.
https://www.bbc.co.uk/news/articles/c239zz1m324o
Now if you have bothered to read this far, would you like to fully explain why you think I'm ablist and appalling for literally recognising the similarities going on here and the concerning pattern, which really needs an intervention for all concerned.
Reading the above and what the the OP has stated is really troubling. The parallels are there. I'm not remotely being a dick. The inquiry's remit for the second phase literally is about the application of this to the wider public and individuals exactly like the OPs brother to prevent any kind of repeat whether it be as serious as this particular case or less serious acts of violence.
You also have not addressed the points I've made about his already criminal behaviour where he has made threats to kill which are a police matter and prosecutable. Given he is regarded as having enough capacity to receive PIP rather than his parents receive it on his behalf there is a real problem here.
If nothing changes there will be a crisis point. That's got fuck all to do with the wedding and frankly the OP is wise to ensure that crisis point doesn't happen AT her wedding. As it is, there every chance he'll do something to get attention in the run up to the wedding from everything that been suggested. The OP probably needs to mentally prepare for this possibility too and just go get married tbh.
Tbh, I don't this point will particularly be pretty reading for the OP herself however I do think it important she knows all this and how the echoes of her brother's behaviour are massive red flags to be taken seriously.