I've never heard anyone claim the cause of death was shock.
They usually default to cardiac arrest over here.
But to answer the question, no. Shock is such a broad term. There are many different types of shock. And that makes this a hard question. Shock is often the last stage before death, but it's not the cause. There are many underlying causes of shock. So I wouldn't say the cause of death is shock. I'd say the cause of death is whatever caused the shock. I mean, shock is still often a reversible condition. So, again, the cause would be whatever caused the shock. I...can't really wrap my head around this question.
I think you should blow the next person to debate it with you off, because I can't comprehend how one would argue for or against it.
Shock. Inadequate perfusion. Well. I mean, the heart would fail because of...inadequate perfusion, which is caused by a multitude of reasons. The brain would fail because of inadequate perfusion, caused by the same reasons. So I guess I can see it. If death is failure of the heart/brain, that would ultimately be caused by lack of perfusion, which is the result of a multitude of things. So yeah, I guess they are kinda right.