As a non-American:

I feel like hyper-capitalism and America's borderline corporatocracy is responsible for this. So many Americans feel like they're being lied or taken advantage of in order for corporations to profit.

The suspicions about "Big Pharma", for instance, almost make sense to me if I try to consider it from an American perspective. Healthcare is insanely expensive there, and being told you need to spend hundreds or thousands of dollars "for your own good" is enough to make anyone suspicious. Especially when you see men posting their itemised hospital bills online where they were billed $300 for "women's sanitary products" - it's very clear these companies and healthcare providers are willing to be dishonest in order to profit. So American people start to distrust the entire industry/field.

Of course, when you look at it from a global perspective, or especially from a perspective of a country with nationalised healthcare where the same profit motives don't exist, it seems absurd. Just because the American companies are scummy doesn't mean the science behind medicine is wrong or a lie.

And it's the same across so many other industries. American companies take advantage of consumers, consumers start to distrust them. American people have been conditioned to distrust or be sceptical of so many things at this point that a lot of people feel like their own judgement is the only thing they can trust. Of course, not everyone has the critical thinking skills for that to actually be true, nor does everyone have the education in every single area for it to be true. And for those people with weaker critical thinking skills, having some charlatan come along and say, "well we all know you can't trust X, Y and Z, so what if A is a lie as well? And trust me, you can trust B" makes them think, "oh wow, they're right about not being able to trust X, Y and Z, maybe they're right about A and B too".

And so your Donald Trumps, your Alex Jones, etc, gain power and influence, and the people who follow them feel smart because they can "see through the systemic lies". It doesn't matter that half of what they say isn't provably true because (to their followers, at least) it could be true.

So I don't think it's just American exceptionalism that's responsible. I think the whole system's so broken that it's conditioned people to be sceptical and distrustful about everything, and to try to take advantage of the broken system when they can.

I feel like Americans generally “know better”. The bottle says to take two, we know better than to follow the label, we take four. The button says to hold until three quarters full, we know better than to fall for that coffee stealing scheme, we crank that baby till it spills over and then try to add 10 creamers with a name we can’t pronounce. So when we hear that someone died under a bizarre circumstance, we know better.

I have taken to calling this "American Exceptionalism". Its in some ways baked in to how Americans address their world. I think much of it comes from pride-in-struggle, that for many Americans, their pride is all they have. And so this needs to be bolstered, put up front.