I havent agreed with all of your views but this is very accurate what you have said here.
We have a number of children on DOLs, they have high staff ratios, 3-1, 4-1, we have had higher. They need solo placements because other children cant be placed with them. They cant attend school because they've usually be excluded, cant find a school place for them with their needs, or refusing to go to school etc. Activities need to be supervised with numbers of staff.
Its not a normal life, its isolated and institualisation with a different face, they're not living a normal teenage life.
If the Court choose to discharge the DOLs, you have various professionals jumping up and down that we're not protecting the child, not meeting their needs, missing episodes and harmful behaviour increases, self harm, exploitation etc. But they're not sectionable, criminal justice wont consider criminalising children or remanding them/prosecuting and serving sentences.
You could look at secure units but they tend to choose children they think they can work with and make changes usually around drugs/gangs/crime, not children whose main presenting difficulties are dysregulation and behavioural difficulties.
So you carry on with DOLs and this unnatural life