I think you're focusing on the wrong point. A rebuttal to the idea that “the populace isn't subject to judgment” should use specific events.
Alcohol and the like are not counterexamples.
BTW, nothing personal, I've noticed that in conversations Euros and Americans are always concerned with very small details, not the whole story.I wonder if your history education ever addressed the relationship between contingency and necessity. Or does it overly focus on anecdotes like 'for want of a nail, the war was lost'?
back to yor post, you also mentioned that the WWI led to poor sanitation in Europe, especially within trench warfare.
So it doesn't matter if the 1918 pandemic was brought on by Americans or not, other pandemics in that sanitary environment might not have caused the kind of killing effect that the pandemic did, and would have hit society hard.
Do you want good examples?
ONE: Churchill, the victor of the Second World War "blood, sweat and tears" lost the first election he stood for, after the British victory.
TWO: The propaganda was not enough to stop the Germans from fleeing to the west, and it was necessary to build the Berlin Wall with the Vopos shooting at people trying to flee.
THREE: Despite the efforts of the infamous UNESCO organization to preserve traditions and culture in the Third World, its inhabitants, as soon as they can, leave there, dress like Europeans and most adapt to our customs, despite the efforts of terrorists to separate the two civilizations.
FOUR: If you know where to look, you'll see that the populace is becoming more and more intelligent and difficult to control by propaganda and the mainstream media. The elites are so worried that they are beginning to consider the possibility of annulling the result of the elections that do not suit them.
Regarding the second issue, the reason why Europeans and Americans argue over small details is because they agree on the big details: health, food, civil rights and liberties, free elections (for the time being) and above all, peaceful handover from power without the need to poison or imprison opponents who threaten to gain power and change things.
The word “pandemic” means nothing because the causes and effects can vary greatly depending on the nature of the bacteria, virus, or meme that causes them and according to the structure of the society that suffers from them, the time of year in which it spreads, the density of the population at ground zero, the speed of transport networks or the criminal interference of supranational organizations to prevent the causes, origins and demands for compensation from being known. We all know who, why and why you can't say in this forum who and why.