And if people are treated differently (and they are) than those differences must be addressed as they are. Not under some banner that erases such differences.
Furthermore, these "divisive" elements are people, their identities, their experiences, their lives. To treat this as "divisive" and distracting/less important is to treat them (us) as "divisive" and distracting and less important. And there's nothing revolutionary or just about that, it's simply a continuation of the Kyriarchy. And a social justice advocate/group cannot be Kyriarchal and just.