Leftist ideas favor the disadvantaged generally, but they have traditionally discussed economic disadvantage, since money is the primary way we denominate power and implement material change.
This recent "woke" trend originates from leftist impulses in a society where the fall or even moderation of neoliberal capitalism is 'harder to imagine than the end of the world'. A society where Reaganomics has been adopted wholesale by Third Way Democrats who still control the political discourse because that's what effectively fundraises from billionaires. Politicians who try to satiate their political base by promoting diversity initiatives that will make zero dent in the economy or institutions of state. "Social Justice" as explored on Tumblr by people still in university (isolated from economics) is largely orthogonal to that, and it wouldn't be possible for people exposed to more of the diversity of society and the exigencies of life to ruminate on the subject, absent economic concerns.
This is what leftists complain about with the pejorative "liberals", a distinction that half of the country appears to be completely unaware of because every pejorative means the same thing on Fox News.
This tendency to substitute diversity messaging for systemic material solutions appears to have zero appeal left to the American people. No, the American people do not want to send the gender noncomformists to the gas chamber, but if that's all you talk about, it does not add up to a political platform that people vote for. The "Black Lives Matter" protests demanded dramatically reshaping the way criminal justice works, not wearing kente cloth for an afternoon. The last Democratic presidential candidate scrupulously avoided social justice, but they didn't actually substitute any sort of populist left-wing economic ideas because the donors wouldn't allow that.