This attitude hurts poorer working class people because it causes high-payed workers to identify themselves with the capitalist class rather than workers.
Are you sure about that? I think recognizing that you’re in the top 1% (and probably top 0.01% globally) is a much healthier way to help underpaid people. It lets you eg advocate for higher minimum wages, social safety nets, higher taxes (that you’re happy to pay, cause hey, lots of money), etc. Earning that much money while pretending to be oppressed seems borderline offensive to me.