Vocational training is great for people doing crime because it's their only option, but less so for people who already have jobs and commit crimes of neglect or laziness - the ones which are most likely to feel remorse for their actions, rather than justified in doing what they needed to survive or just being remorseful they were caught. Like I said, very few crimes it's actually appropriate for, and vocational training would usually be better, but I still think it has its place.
Nope, also extremely inconvenient to them. It's only actually convenient for a small selection of neurotypicals with ideal or near ideal home lives/parent involvement, while nearly every other kid benefits from basic adhd accomodations like fidget toys or being allowed to sit/lie wherever to do their work. We haven't made any significant progress on teaching since the victorian era.