That's not what this is all about.
Pelosi isn't some kind of crime family boss here (though she may be that, too). She has an astute political machine behind her that knows damn well how idiotic it is for the party to embrace a bunch of idiotic ideas that have no political support -- or corporate support -- outside a handful of districts where radical leftists routinely get elected anyway.
The clash among the Democrats in the House is between this small rabble of radical idiots and the much larger number of Democrats who: (1) represent districts that Trump won in 2016, and/or (2) were elected in 2018 to replace Republicans in wealthy suburban districts. Item (2) in this group is important. There are probably at least 40 Democrats representing districts where the "1%" those freshman Marxists always complain about are the dominant swing voters.
Except that at least 5 of the demo's presidential candidates seem to buy into their stupidity.
I'm not sure just how small is this "small rabble of radical idiots"?