Class is where the power against this is exerted from, not the capitalist system adopting notions of it that don't threaten the economic arrangement, which is generally the ground the "culture war" fights on right now because there is no political power from the left in the US. The capitalist system adopting DEI for instance, like okay we can all be exploited equally, it's easy to see the fairness in that and support the idea one group shouldn't be favored above another. However the idea that the best people from each identity group get to have the best stuff isn't doing anything in relation to income inequality, it's a very reactionary notion of these ideas which in practice perpetuates the system that itself produces the disparities. Seeing this as a class issue and brining class to the table, without any way to exert political power in the US, is right now the job of the individual leftists.