All Americans are partially responsible for the costs of the Iraq war. That is irregardless of their support of it. This is how a democracy works, or to a bit lesser degree a psuedo-democracy republic as is the case here.

A citizen's level of responsibility increases for those who advocate for such actions, and the level increases with a wide and strong advocacy.

To attempt to wipe the slate clean of such responsibility is grossly unfair for everyone involved and must involve some deeper issues of which I will not speculate. The fact there was an appeal to eminent death as a reason to not call this out is absurd. A terminal condition doesn't retroactively absolve responsibility.

This is coming from someone who thinks the Iraq war was needed however it was done so in the height of incompetency.