I know all about incestuous practices in royalty, going back to ancient Egypt and beyond. But by the middle ages in Europe, which the society in GoT approximates, direct brother and sister relationships were looked at with the same disdain as today. Why GRRM chose to almost normalize it is strange.
Its not normalized in GOT. its a practice thats condemn by the church (of the seven). And in the early years of the targarayen region led to a lot of the deaths when the kings sought to practice it. They made an exception for the dragon lords, but if anybody had found out about Joffrey Marcella and tommen, Cersei and Jamie would have been killed
I don't see any characters in GoT celebrating the incestuous relationship between Cersei and Jaime. In fact, I see in other characters the very disdain you describe.
If I'm not mistaken, other than Craster's incest with his daughters, which is also shown disdain by other characters, there is no other incest-based relationships in the show.
How is this normalization?
>Why GRRM chose to almost normalize it is strange.<
The entire plot of the books and video revolves around the fact that the evil family steals the throne since the new king is the spawn of the queen and her twin brother, not the son of the murdered King. They put a 2nd false son on the throne, when the 1st one is poisoned.
I cannot see by any stretch, that the George RR Martin frames that behavior as mundane.