You have to remember that most racists don’t use the (accurate) language you’re using. They don’t think they’re racist. They don’t think about phrases like “racial purity.” They worry about birth rates, immigration, and most important, who is having children/immigrating. They’re coming at it from a more socially acceptable way that gives them plausible deniability not just for us or polite society but for themselves as well. They say things about “being replaced” and “losing our culture” because that’s easier to stomach then “I don’t want undesirables, consisting of x/y/z groups, growing in number.”