Once again. racial voting demographics are not all that the "Great Replacement" theory entails. You are trying to sanitize the term, by only applying it to a partial definition.
"Liberals are trying to replace the current electorate with new, more obedient members from the third world."
^^^^ These exact words have been uttered by Tucker Carlson multiple times on his show, whenever he is discussing the "Great Replacement" theory. This sentence does much more than raise alarm about the racial demographic breakdown of future elections in the United States.
Tucker Carlson is also fear-mongering, with elements of xenophobia as well, in his depiction of immigrants as only being "obedient members from the third world." He is strongly implying that black and Latino immigrants are mostly comprised of unskilled labor who are coming for the manufacturing jobs currently held by unskilled Americans (such as the Buffalo shooter, for example). However, just like yourself, and other conservatives posting to this thread, the only breakdown of data ever provided, involves race. Levels of education and work experience are never addressed. Tucker Carlson makes the all-too-broad assumption that if it's a black or brown immigrant from Central or South America? It must be unskilled labor. More than anything else, Tucker Carlson is guilty of some very lazy and incomplete analysis.