Oh, no. It sounds black because it is black. Check the history. "Juneteenth" the term was absolutely invented by black folks. I'm just finding it interesting that it "doesn't sound black to others."
I mean, I know that. I'm thinking of why it doesn't "sound black" to others but it does to you. Words are just words. They don't have inherent qualities that can't change or are the same to those who haven't heard the word before.
Yeah, I mean I know this can be a feather-ruffling point but (esp at my age) there's something wild about the Black slang -> "mainstream cool" slang pipeline that's ubiquitous and feels instant. :)