Not surprising as is noted in the article.
Interesting quote/question
"Dr Sanjoy Kumar, father of Ms O'Malley-Kumar, said: "I think the first question you have to ask is - can a paranoid schizophrenic commit murder in this country?
"Because it seems to me that you can't, and that's impossible for us to understand.""
I suspect the answer is that it is highly unlikely. I'd also argue that there are good reasons for that. The assertions from those with loved ones killed that he's 'getting away with murder', maybe understandable but they are incorrect as he's not getting away.
https://www.bbc.co.uk/news/uk-england-nottinghamshire-68643143