Even some black millennials are socially conservative.
They are some socially conservative Black Democrats, the Republican Party is too white for them; they call black Republicans "sellouts", "tokens", "coons", but the Democratic Party does not have any socially conservative values or beliefs, but they vote Democrat because the Republicans don't do good outreach to black people.
Latinos the same thing.
It feels pointless to respond to you, but I'm going to do it anyway.
Black people don't vote Democratic because the GOP is "too white", they vote Democratic because the GOP panders to racists and never even tries to reach out to the black community.
Also, I don't see what's wrong with saying a black person is a sellout if they support a party that's lead by people like Donald Trump, so long as it's coming from someone who's also black and not some woke white liberal who lives in his moms basement.