the progressive form of diversity functions to exclude most of the American population on political grounds:

So the progressive left’s claim that failing to embrace their positions is the death-knell for Democrats among younger generation voters is highly suspect. Of course it’s entirely in their interest to claim that only a bracing tonic of progressive left positions can jolt these voters out of their torpor. But there isn’t much behind this claim; in reality, the intersectional left and the groups and politicians in +25D Democratic districts that support it are paper tigers. Their power derives more from their ability to scare the rest of the party than from their power over actual voters.