>
most thought they would be locked up in a ward or some similar conspiracy fear.This fear is quite legitimate though. Search around online forums for involuntary commitment and you'll see lots of horror stories. There are even news articles about it.[0]
If a homeless person can get back on their feet, then they are a full member of society with all the same rights as everyone else. If they get institutionalized, whether voluntarily or involuntarily, then that'll be a mark that follows them around. They will be denied some rights.[1] A patient at such a facility often has fewer rights than even people in prison. At least in prison if your time is up then you'll be released.
The problems don't stop there either. Misdiagnoses are common. Even when they aren't, it's likely that the treatment they offer has no or minimal effect. It's also possible that the trauma of being in such a facility causes issues of its own.
I can completely understand why people would prefer to struggle with their problems as homeless, but free, rather than go to such a facility.
[0] https://www.seattletimes.com/seattle-news/times-watchdog/pub...
[1] https://reason.com/volokh/2020/09/10/the-second-amendment-an...