What is the justification for someone saying "the elite are the enemy of the working class" and yet being viciously anti-left?
That is not inherently contradictory, even if one accepts the premise that left-wing economic policies are inherently beneficial to the working class. One can easily be ''viciously anti-left'' primarily, or entirely, because of certain stances they take on social/cultural issues that aren't inherently tied to economics.
I can’t really think of many liberal social stances which actually damage the working class materially. Sure, some on the left make disparaging noises about blue collar culture in general, but so do many corporate conservatives when no one’s listening.
Maybe if you talked about "the working class" in sort of racial, instead of class based context, I totally agree.
If you are talking about integration and birth control meaning more people applying for the same job. That could drive down wages, but increase household income.