So you think that 10 year olds boys make a "choice", as that's what you have quoted (in the final sentence)?
In that case, while people believe that, the cycle will continue. There will be more 10 year olds doing this (see case in Doncaster) because we do not address the problem. The kids may well be evil (I'm not saying they aren't) but while people believe they chose to be evil, and do not address why they became evil, we're doomed to yet more of these sad cases occurring.
If society lets people who are totally and utterly unsuitable to raise a child do so, and those people abuse them, torture them, and raise them to believe that evil acts are both normal and right, and then society does absolutely nothing against the person raising the child and blames the child for choosing to be evil, then the results are, sadly, predictable.

I wish there would be no more cases like this, but there will be.