Americans and Europeans are both right about their own situation, because most European countries have functioning political systems, so there is a good level of popular control over the functioning of the state. The same is absolutely not true in the US due to issues like the senate filibuster, lobbying, campaign financing, gerrymandering, first past the post, and surely others I’m not thinking of.
The US is best understood as a very flawed democracy, somewhere between the extremes of actual authoritarian states on the one hand and modern well-run European states on the other.