The thing with the Nazi comparison is that they are so often overdone, or over-used, and that cheapens, demans, and devalues the power of the insult.
And, sometimes, it is excessive; not every political outrage merits describing someone as a Nazi.
So, there is a element of intellectual laziness - and historical sloppiness - in reaching for a term that has almost beocme a cliché.
Moreover, in one of the places where I have worked - Georgia (Caucasus Georgia, that is) the first (not the last) political insult that was reached for in heated political debate was "Hitler", or "Nazi".
Having said all of that, there are occasions where the use of this term to describe a contemporary action or thought, is entirely appropriate.
That is why I asked here, yesterday, which Aamo? Or, rather, whether Mr Trump had headed to, and arrived at, the correct, or the right, Alamo.