This practice is widespread today minus the slave-labor component in the form of the guardianship system, underwhich people who work as "guardians" give kickbacks to healthcare providers to identify wealthy geriatrics. The guardian, once one of these victims is identified, has them declared incompetent (even if the victims are still living independently with no apparent problems), and then takes over all their financial resources and complete control over their healthcare. The end result is the elderly person or couple is forced into a nursing home against their will; their family will be barred from visiting or corresponding with them; and the guardian walks away with a percentage of their net worth (with the reminder going to the cost of the nursing home). In states that are popular destinations for retirees like Nevada, the court system sees families who oppose this fraud/practice as evidence in favor of it happening, with judges & guardians often arguing that it shows the next of kin(s) are only concerned with money and that's why they don't want their (up until now healthy and independent) retired parent going into a bottom barrel nursing home.
> What this person wants to bring back is the ability to lock people up and keep people locked up there with little recourse.
What they want, is a way for socially undesirables (an intentionally vague and flexible category) removed from society in a way that avoids the guilty emotions invoked by executing them.
The asylum system in the US was not dismantled because people like Edna Long had their inter-generational wealth stolen from their children/grandchildren. It was dismantled because in the 1960s it was shown that these places were engaging in torture. The journalist who broke the Pennhurst story (that culminated in the ending of the asylum system in the US) wanted to have the grounds turned into a museum modeled after the Holocaust Museum because he had uncovered how things like, full mouth tooth removal was being used as a routine punishment method, among other things.
The cruelty towards these people was the goal itself. People were warehoused in feces without clothing instead of employing enough staff to change people & do the laundry often enough.
I have been to the house of Pennhurst's head psychologist from the "bad years." When he went into a nursing home a contractor bought his Federalist era farm to use it as his own-home and found that the doctor had gone insane from the guilt that his career had given him; he lived his last decades off the grid with no heating, electricity or running water; had a hole in the decaying roof that he had dragged a 19th century clawfoot tub under to collect water, and filtered the rainwater through old bedsheets and used that for cooking/drinking. The farm, with brush & grass 3ft thick grew over everything; the barn filled with a massive dragon's hoard pile of intellectual books (many of which I got to keep as souvenirs), while the hidden loft had been turned into some kind of computer & photography studio with restraints, camera arrays and so on.
I forget whose case it was, but sometime after Kaczynski was sent to ADX Florence, there was a criminal who was sentenced to join him there. The judge remarked at sentencing that they were to be sent "where people's souls go to die" or something to that effect. That. Was the real purpose of our state Asylums.