Not if your first question is "why do so many pregnant mothers die during childbirth?" - GP's point is that it's a disheartening realization.

That being said, it's not necessarily true - after all, if X resources would be more effective mitigating cause of death A than cause of death B, then presumably you would want to (from a utilitarian calculus) direct them to A, irrespective of whether A or B causes more deaths.