Perhaps, I can't speak for that weirdo. Maybe in America people only hate others because of major color differences, but elsewhere, it doesn't work like that. Don't underestimate the willingness of people to kill others with the exact same complexion over... supposed exact ancestry, or because you're a Christian.
He meant the spelling. But you're still making a mistake: Boer doesn't refer to British South Africans, and there were a lot of them.
So they're picking on, to use their phraseology, a small, vulnerable minority within whites, not even whites as a whole.
Rather doubt the guys singing "kill the Boer" care all that much about the exact ancestry of their pale targets.
Perhaps, I can't speak for that weirdo. Maybe in America people only hate others because of major color differences, but elsewhere, it doesn't work like that. Don't underestimate the willingness of people to kill others with the exact same complexion over... supposed exact ancestry, or because you're a Christian.