To me, it boils down to this:
An agenda that concentrates on one’s “share” of the 1% sustains the existing system of oppression.
Yes, it’s obviously the case that women and minorities are discriminated against when it comes to climbing the ladder, and a host of other things. But doesn’t it make a lot more sense to do away with the ladder itself? If there is no ladder to climb, no pyramids to support, no neck-breaking hierarchies to fight through . . . the distance between genders, ethnicities, etc. etc. is already radically shortened.
We could have perfect “equity” between all those categories, but as long as we maintain hierarchical structures, we’ll always have massive inequality overall. We’ll still have a ginormous difference between top to bottom, obviously.
And another negative side-effect: The “natural” agents of positive change, currently, are women and minorities. The ruling class wants to co-opt them and turn them away from being agents for change, and into agents to support the existing structures. The “lean in” and “know your value” movements feed into this, at least unwittingly.