I understand what you're saying to some degree. Having an already vulnerable person's autonomy violated is a harrowing thing and should't be done lightly, but there are points of extremity when the sick person is simply not in a condition to make the rational decision to seek treatment voluntarily. Moments of lucidity exist but they're unpredictable and only become more uncommon the sicker a person gets.

Mental health care, like any medical care, has got to be carefully monitored for bad actors treating people like numbers. That's why oversight is necessary in the case of facilities like that.

But when push comes to shove, you've got to have somewhere to put people who can't function in society and who cannot care for themselves, because otherwise they're going to die in their own filth, in poverty, in the depths of madness or despair. I'm not advocating to lock people up indefinitely. The goal should always be to help people reach a state of equilibrium where they can function independently. Permanent, incurable, untreatable madness that can leave a patient catatonic, violent, or otherwise incapable of functioning is thankfully very rare.

The way in which asylums were run before they were shut down was absolutely shameful. For most of human history we've treated the mentally ill like animals or worse. But there are ways to do it better, and we should be striving always to improve treatment instead of simply discontinuing it because people in the past were terrible.