It might be news to you, but very few of the people who participated in the successful Russian communist revolution of 1917 were knowledgeable about the finer points of Marxism too. You don't really need that many. The rest can be useful idiots. The few knowledgeable people behind the scenes know and exploit this. 6 months before it happened, BTW, Lenin said in a lecture in Zurich that a revolution would not happen in his lifetime. But a rail car full of German cash helped things along quite nicely. So if you think this can't happen here, you should probably reconsider.
Same with Cultural Revolution in China or Khmer Rouge. Same with Nazi Germany - I seriously doubt Hans Sixpack hated Jews or Slavs all that much. In a way, Fascism was too "lifestyle branding". Germans, down and out after WW1, were sold this grand vision of Third Reich and Lebensraum stretching shore to shore on the Eurasian continent. Oh, and if you're against it, not only you'd get "canceled", you'd get shot by the nearest ditch. We're a few years out from that at the moment. In terms of tangibles outside lifestyle branding, BTW, Antifa at the time wasn't that different from fascists themselves. They wanted a communist authoritarianism, hammer and sickle and everything, while fascists wanted more of a capitalist version. Any sort of "democracy" wasn't even up for discussion.
Same with communism. Why wouldn't a "working class" Ivan Sixpack want to "own" the factory he works in? It did not occur to Ivan to think about what that'd actually mean in practice. 5 years later Ivan dies of starvation, 15 years later his extended family ends up dying in Gulag, for being "counterrevolutionary element". He did not end up improving his condition before he kicked the bucket either: the factory is now owned by the state, and it's illegal to not work there. Ivan was a useful idiot, and he outlived his usefulness. Don't be like Ivan.