When politics is about achieving economic equality, it implicitly validates the economic status quo as something that is good, only which should be available to more people.
This doesn't make any sense. People who want economic equality want to invalidate the status quo. They are demanding that things change.
They only want them changed insofar as they want the economy to expand to include them in the middle class.
It is fundamentally implicit conservatism that validates middle-class consumerism as the status quo, which more people want access to.
Real progressivism would focus on achieving economic changes and other changes that benefit people who are unhappy with the status quo, not just saying "the status quo is good and more people want it."