However, the latest lore no longer associates "necromancy" as being a synonym to "death magic". Both are now separate terms. "Death magic" is a type of magic, and "necromancy" is what you can do with any type of magic.
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Your problem is that you're putting words in my proverbial mouth that I never said.
I didn't say "Danuser said so, therefore it is true". I said it is what we see in the game, and it's the latest iteration of the lore, therefore it's the official canon. And that is indisputable.
Again: you not liking what is written doesn't make it any less canon or official.