Wasn’t that the whole second half of the article?

Though it’s worth explaining how all of this works to understand how nonsensical Musk’s beliefs are, the facts don’t really matter to people who are convinced that the great replacement is actually happening. The real die-hards don’t think it’s a scheme to create a permanent Democratic majority; they think it’s a plot to ethnically replace white Americans. At its core, the great replacement is about demographics, not democracy.

They go into further details after that.

Edit: Second half may have been generous. It’s the last few paragraphs though.