Honestly, I view this logic on the same grounds as Edwin Shneidman's "the suicidal pictures their funeral, a reality beyond which they have any control, and yet by imagining it seeks to delusionally control it." I do not believe, however, that this logic holds any ground as a general rule. I am not advocating that people should take their lives, but I do think the leap in logic from imagining to delusion is too quick. It mistakes a kind of psychological meaning making for an imagined sense of control.
Patients suffering from terminal illness imagine their funeral and the way the world will continue on after they have left. To me, this does not represent delusional thinking or some imagined sense of control. It represents a natural facet of human life. It is completely in our bounds to care about others. It is completely reasonable to think about the future even far beyond our lifetimes in an arena where we know we will not have control. There is a crucial difference between believing oneself can alter reality and imagining one's place in it with clarity. One can be a desperate attempt to manage an intolerable reality. The other can simply be perspective, a way of confronting what life means when time is finite.
To claim that imagination itself is automatically delusion, or that it necessarily functions as control, is to narrow the frame until almost any reflection on death becomes suspect. It is narrow thinking to believe we cannot conceptualize a future without fooling ourselves into controlling it. It is narrow thinking to believe we cannot care for others unless we are there with them to share the burden. And it is from this narrow thinking, the insistence that thinking about what comes after must be pathology, that empathy and perspective get treated as if they were denial.
In my view, this absolutism reflects naive thinking. It reflects less an understanding of death as a human reality and more an inability to conceptualize how people can face it without nihilism. Unable to conceptualize a world beyond their death, knowing they must die, accepting or potentially rejecting death, some views become pessimistic in a way that cannot easily make room for tenderness, responsibility, and the moral weight of the future. This is an extreme I would say even SaSu members have struggle reaching, as hopeless and pessimistic as our views towards the world may be.
To pull the old quote, "A society grows great when old men plant trees in whose shade they shall never sit." The point is not that we can control what will outlast us. The point is that we can still act as though it matters. Still care. Still plan. Still build. Even when we will not be there to sit in the shade.
Therefore, it is not narrow to care without controlling. It is narrow to insist that we must control in order to care. Maybe this point is contradictory to this post or illogical in-of-itself, after all, it intertwines the inclination towards suicide that many of us seem to harbor with sentiments that may, in another context, be construed as pro-life (e.g. there's still meaning/reason to live in spite of suffering), but I still believe it holds up anyways. Using the logic of a stance you do not agree with to argue against it makes a rather nuanced argument.