I hear what you're saying, @ntmdino . That may be the case in England - I don't know. In Scotland, I'm firmly of the belief that it's down to the fact that there are minimal consequences for younger people.
I'll try to say this wihout being too outing. Back in the '90s, I reported that a couple of 13 yr old boys had handed me a piece of imaginative writing in which the main character raped a young member of staff at the school where I worked.
I handed it to their Pastoral Teacher, to be passed to the school's Child Protection Officer.
"Ha, ha, Weary! What have you been teaching those boys?" (Yes, it was a man.)
After leaving school, one of them carried out the attack described in the "story", but on a child victim. First offence. Under 21. Very short sentence in a Young Offenders' Institution because he pled guilty to a lesser crime.
Released. Offended again. Over 21 and deemed to be too dangerous to be released again this time.
We now have a situation here where we're being told that "young people" under the age of 25 aren't really responsible for their actions, because their brains aren't fully developed. God help us.