The reason they aren't in a psychiatric hospital is because the only reasons we can involuntarily commit someone is if they are a risk to themselves or others, and like stated elsewhere in the thread is generally reassessed by a judicial process every 72 hours depending on the state. What I'm reading in your post is that you're in favor of involuntarily holding more people which I find interesting because many others in the thread are complaining that it's too easy to have someone committed. There are a lot of armchair psychiatrists in this thread who have never seen someone in psychosis or truly manic suggesting that it's a joke to have someone committed. I spent 3 weeks rotating in a psych emergency department and only saw 2 patients out of probably more than one hundred total patients admitted for being suicidal. Neither were involuntary. From what I've seen unless you have just attempted or have a concrete plan to attempt suicide again you're not going to be admitted. There are just too many people who are in not-on-the-same-planet level of psychosis or mania that are taking up beds to admit someone who is not really about to attempt suicide.

Not trying to pick on your post or anything just thought it is a good example to say that it's maybe not as easy as it may seem to decide who gets admitted/committed, and the dichotomy in this thread shows that point.

Regarding potential overuse of sedation (benzos) or antipsychotics in nursing homes, it's easier for a nurse to push a doctor to prescribe meds to "snow" a patient than to spend time in the room and try to reorient a sundowning delirious dementia patient.