Miscegenation is just 'breed out of place'
It was only when the Victorian Age's growing addiction to pure modernity led them to put Aboriginals in a pile way over there and Europeans in a pile way over here that they then noticed that the children of a marriage between a native and what ? (an alien ?) were a hybrid, the half breed.
For centuries earlier, most people hadn't really noticed anything 'unusual' happening.
As Bruno Latour meant to say, the harder the pure modernists tried to separate humans from nature and worthy 'real' humans from unworthy sub-humanity, the more they created new hybrids were none were (noticed) before ....