They tend to not be true to life for several reasons, not the least of which being that they often pivot on the "chosen one" coming from squalor before assuming their rightful place at the top because it is carved into the bones of the universe that they, individually, are to be king and no matter what disadvantage they are put at they are personally geniuses with an ability to grow in power that outstrips the rest of humanity combined, the universe bends to their narrative benefit, everyone loves them, etc.
I hate them not for it being like a rich person being born rich or because they have any realoism, but because they are about a total rejection of reality on every conceivable level.