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What on earth are you going on about?
"Completely consistent" means exactly that. A person is not necessarily 100% of one alignment, but it is the majority that matters, not any individual aspect. Even if an elf treats human lives as disposable and with cruelty, they can still be Good, if the rest of their personality fulfills the criteria for Good.
The rules directly permits this. There is no twisting of words, and it is actually quite insulting that you would claim I am doing so.
People are not cardboard figures that fit neatly into 9 boxes. Alignment was never meant to model individuals in more than general terms.