When I was first going through what turned into a very long diagnostic phase for some mental health (let's call them) oddities, every person involved at any stage asked, every time I talked to them, whether I had thought of suicide. At one point, I had been asked about it so much I actually started contemplating if I were to kill myself, how would I do it (mind you, this wasn't wanting to, or even entertaining the notion, but me going "Why not actually think through the reality of it?"). I came to the decision that if I were to ever kill myself, I would stab myself in the heart with a knife. Yes, it would be excruciatingly slow and painful (can't quickly stab yourself and dodge ribs, have to drive the blade extremely deep to get the heart, etc.), but it would serve a singular purpose: to signal that it wasn't a quick decision, to absolve people from feeling like there was something more they could have done and to remove all doubt about how strongly I felt about making the particular decision. When I explained this to the psychiatrist next time I was asked, his response was along the lines of "Do you think someone would be capable of that?" And the only response I had was "If they wanted to end it all that badly, yes".
All this as a long ways to get around to saying: I disagree with anything that may consider suicide appropriate in any situation as one persons personal decision and situation becomes an example or model that someone in a similar situation could look to. But, I also don't think anyone should say a particular person should not have committed suicide. Instead, what should be said is a particular person should not have felt the need to commit suicide.