Why do Targ supremacists/TB people refer to Rhaenyra as "pure-blood" compared to the Greens even though she herself is not truly "pure"? Do they forget that her mother was a Arryn?
What many targ/tb stans are actually referring to - whether they realize it or not - is that Rhaenyra descends from two Targaryen parents in the previous generation because Aemma herself had a Targaryen mother. That means Rhaenyra has a higher proportion of recent Targaryen ancestry than Alicent’s children. But that is very different from being "pure-blood" By that logic, very few Targaryens outside repeated incestuous unions would qualify as "pure." Ironically, this fixation mirrors the same kind of blood-quantum thinking found within Valyrian supremacist ideology.
The books repeatedly show that House Targaryen has intermarried with numerous non-Valyrian houses - including the Martells, Blackwoods, Daynes, and others - throughout its history. There is no objective point at which someone suddenly becomes "impure" because one parent belongs to House Hightower rather than House Arryn.
And what’s even so great about having “more Targaryen blood” anyway? Like yes, Targaryens have magical blood, but that doesn’t mean they’re morally superior or deserve to rule. The whole point is that Valyrian "special blood" is tied to dragons, power, and a history of blood magic and sacrifice. It’s not some proof that they’re a magically superior master race of silver-haired nobles who deserve domination because of their “pure blood” and incestuous breeding.
Their special blood gives them access to living weapons of mass destruction. That’s literally the whole point/problem. The question isn’t just who has the magic blood? but what was the cost of obtaining that power, and should anyone have that much power over others?