It's normal that mental health laws have a lower standard for "human rights" when mentally ill people often behave in unexpected, illogical, and dangerous ways. We have to accommodate for that, for the safety of humans.
You seem to be arguing also that it is only the mentally ill who often behave in "unexpected, illogical and dangerous ways". The reality is that humans in general sometimes do that, whether or not they have a clinical mental health problem. The way your comment insinuates that the mentally ill are sub-human is repellent, but I suppose you might not even realize that you are doing that.
You may think of yourself as a model of logical, predictable and safe behaviour. I'm so tired of engineers who deny that there is any irrational element in their makeup. It is a naive thing to claim and a lame kind of deluded bid for superiority. "Others might be irrational, but not me!" Spare us. That attitude is the curse of HN and YC.
Now can you talk about the minority who are dangerous to themselves and others around them and what should be done about them?