This is definitely a nuanced discussion and every situation is different, so I'm not going to make any sweeping statements about the whole thing, but I generally see suicidality as a symptom of something else. If we can improve the "something else," the suicidality improves or even goes away in the vast majority of cases.

This is different from other Medical Assistance in Death situations because in the cases where it is implemented because of pain and illness, there is no reasonable hope of improving their outcomes. In the vast majority of mental health cases, there is a lot of hope, even if the patient does not see it (which is often. Most situations where a person expresses suicidal ideation and intention to family, friends, or therapists do not end in follow through. Having someone to talk to about those thoughts helps. Even validating their thoughts helps: "It makes sense that you feel like that, honestly." But ultimately, you want to help them get through to the next day. The vast majority of people who were in this circumstance are glad they did not follow through).

Again, the discussion is nuanced and I don't think Lemmy is the best place to facilitate this discussion, but that is more or less my take on it.