And if you REALLY pay attention to how fascism actually is in practice, it looks more like a right wing variant of progressivism than anything else. There's also the fact that fascists can be plenty contemptuous of things like religion or tradition when it suits them, just like leftists.
The reason why leftists sperg about fascism a lot more often than even rightists sperg about communism or marxism, is for two reasons: One, it's a quick and easy buzzword, and two, narcissism of minor differences.