Worse, we even have used them to short circuit discussion and close off self criticism with the "Godwins Law" trope. (godwin never said that those who use nazis as an example are wrong, he merely said eventually they would come up.)
We've (the USA) become a nation of holocaust denying racists because we believe that only germans (genetically) can be fascist and thus what happened in germany could never happen here, and anyone who brings up parallels automatically loses the argument.
Just because some people do so poorly, does not mean there are not parallels. Many of the propaganda pieces you see against muslims in the USA are similar to the ones against the jews in Nazi germany. The ideology of "you tell people they are being attacked and then you get your war" rings true here as it did in Nazi Germany. Even the precursors to the rise of fascism in german have existed here and had some similar consequences - high monetary inflation, economic problems with a lack of jobs, a lack of self esteem combined with a "we're the best country' form of nationalism. etc.
The nazis were never really properly studied in my schooling and my understanding is that history teaching has gotten only more superficial since.
A lot of understanding of what's happening in the USA and the world at large came out of an initial early interest in german history (because I lived there) and the consequent study of economics (Ludwig von Mises, a jew, prominent among them, who was scoffed at when he told other jews that they would have to leave austria because the nazis were going to invade.)
Anyway, the superficial understanding of the nazis and nazi era germany expressed in this very article is why we need to actually study the subject, obsessed or not.