Casually using “Nazi” like this in context of American politics just means “anyone to the right of me”

it’s ambiguous but the implications are clear

If you are a Christian, someone who would use this phrase would likely call you a Nazi. If you don’t want to abolish the state of Israel, they might call you a Nazi. It could be any issue really. But to actually be “safe” in an environment like this you have to align yourself roughly to the politics of the DSA or you aren’t welcome.

I guess you could say at this point that “Nazi” has devolved into being a sort of a political slur referring to anyone who is not sufficiently leftist.