Not to excuse GOT, but regarding to Bradford Young, the DP of Arrival and Solo, you just have to accept that its his style. A DP can have his own signature. I liked the Arrival cinematography. The one on Solo, I also found too dark and sometimes hard to see. But I mean, he's obviously knows what he's doing otherwise he wouldn't be working with no one.
On the GOT episode, I'm sure the footage has more light. It was on the grading. The DP has some input on the grading as well, because it's part of the aesthetic he and the director imagined, but's he's not the one doing it.