There is a lot of revisionism here. Yes, the prior poster was using it as an epithet, but that's not how its best understood.
If he was using the term fascist as mere epithet then,
I think the problem is you are interpreting “fascism” and “fascist” as an epithet.
wasn't a fair comment on Eric's observation. It isn't a problem if the observation was true.
1) Saying "Fascism emerges from the leftist family tree" is a deep misunderstanding. I would maintain the political spectrum is best understood on two axes rather than one.
Your understanding of the axes of a political spectrum isn't pertinent to the origins of Mussilini and Hitler. You don't have to agree that fascists are of the left to admit the facts of their origin. An observation about their lineage isn't an assertion that they functioned as international leftists.
2) There's a big difference between national/regional pride and fascist nationalism. The former is a positive sentiment, the latter strikes in opposition to a real or perceived other. The Fascist nation must be elevated above all others, and national purity must be preserved. It's no accident that "America First" was a slogan used in the 1930s by pro-Fascist Americans.
You typically express yourself in a manner that is thoughtful and well informed. However, the idea that nationalism is oppositional and national pride is different is the sort of silliness served in grammar schools. Nationalism amongst americans, germans, scots and ukrainians will all have both positive and negative elements.
"America First" must certainly have been used by some pro-german americans. More widely, it was used by the substantial part of the american population who didn't like WWI, were pretty sure that europeans would be happy to fight to the last american, and didn't want to be part of their recurring blood bath. You can quibble with the wisdom of that conclusion, but to call it pro-fascism is facile.
3) I was remiss in failing to distinguish "national socialism" from "socialism". In Marxism, the state owns the means of production. In FDR-style socialism, the private enterprise is permissible but the state acts as an economic guarantor. In national socialism, free enterprise is also allowable, but rather than acting as an individual economic guarantor- it is required to serve the aims of the state (in practice, the leader).
Socialists don't require state ownership. You need only look to self-identified euro socialists to see that they've figured out that telling owners what they can't do and keeping a share of the profit is better for them. Your distinction between "FDR-style socialism" and other command economies isn't one. The National Recovery Act, his plainly unconstitutional first run at federalization, set thousands of prices. Industrial policy during WWII didn't outlaw private ownership of industry, but the state was used to bring them around to serve the state.
4) I'm not going to argue about the source of political appeal, but any inroads to minority groups were still pretty minimal and overstated. Going from winning 7% of the African-American vote to 10% over a term isn't exactly a mass conversion.
It doesn't have to be mass conversion to note that members of those groups don't see themselves as distrusted or disdained by the movement.
5) What various political figures said about Donald Trump, his legitimacy, or his voters, is irrelevant to whether his political philosophy can be described as fascism. We could spend 1,000 pages reciting the sins of every politician in the country of all political stripes.
It's relevant to whether your standard can be applied to so much of modern politics that to designate only one of them as fascists is merely polemic.
6) I'm sorry to say you have internalized a lot of the misinformation, and I've given up on trying to disabuse people of it. It's not about the factual truth, but how it makes you feel. You feel like the liberals ganged up and invented Russia's involvement in the 2016 election,...
I'm sorry you couldn't take the time to read what I had written for you before misstating it, then calling your misstatement misinformation. You identified use of conspiracy theory and misinformation as a trait of fascists. If you don't think that your standard applied beyond DJT, it isn't a real standard.
If you can't read even recent events dispassionately, you will misread discussion of it as you have above.