I agree that the coastal elitism is terrible, but please realize that that’s not something “the left” does. It’s something that liberals do. The Bernie-type left generally doesn’t do that type of thing, and has suffered similar kinds of attacks from Clinton/Obama liberals for it (ex: being called “Bernie-bros”). They very much understand that racism and misogyny accusations are wielded as weapons by liberals when given the slightest opportunity. As far as I know, this has been an internal rift within “the left” that has severely hobbled it since the 60s/70s, promoting capitalist and elitist liberals instead.