If I understand your question correctly: I'm against stigmatization because I believe it unnecessarily causes more suffering for the person dealing with suicida

If I understand your question correctly: I'm against stigmatization because I believe it unnecessarily causes more suffering for the person dealing with suicidal thoughts. It shuns them and may cause them to land in a mental institution or getting arrested with both of those having cascading negative effects. Essentially, if we remove the stigma and update legislation to reflect that, then people experiencing suicidal thoughts won't fear repercussions for merely thinking about, or exploring options around suicide.