When you see agents soliciting work from BIPOC, when you see a few—out of hundreds—temporarily accepting queries from only BIPOC, it's to try to address this truly grotesque number. It's not special treatment, it's triage.
And for the "everyone should write everything" crowd... if you can't understand why it isn't that simple, how publishing historically elevates privileged voices over marginalized ones... then you probably *shouldn't* try to write everything.