That's the point I'm making. You've read the LOTR books and know the story inside-out. Therefore, the action you see on screen from Peter Jackson is a reflection of the narrative already in your mind, rather than a new narrative which is adjunct to what you've previously read.
The GoT show is half-and-half, which is where the issue arises.
In fact, the last few pages of this thread have perfectly illustrated the problems I'm decrying. There are two main issues I take with the way the certain dense book readers approach the show.
The first is that they fail to watch the show as a piece of cinema. For example, there was a criticism about the White Walkers not joining the fight. But why would they join when their forces are already winning the battle? It's made clear at Hardhome that they have a tendancy to standby on the sidelines and watch. Also, we see the Night King raise his hand to direct his troops. The implication is that the White Walkers observe in order act as puppet masters. From a film theory point-of-view, that's good scriptwriting as it avoids overly verbose exposition but still explains their relative inaction. But when book readers complain about the lack of clarity, they come at it from the perspective of 'bad writing' because things aren't explicitly explained as they would be on the page. In other words, they criticise the show for not being the book. Hence 'book wankers'.
The second is that those same book readers reference situations that happened exclusively in the books. For example, somebody above mentioned that the Unsullied had beaten the Dothraki in battle. But that never happened on the show and a quick Google proves that. The Battle of Winterfell was perfectly in keeping with the TV narrative of the Dothraki being the best offensive force on the planet. Indeed, for me as a show-only watcher, I was half expecting another 'Battle of the Bastards'-style melee betweent the Dothraki and the undead. I certainly was not expecting to see every single flame get extinguished. The HBO version has never given me a reason to think otherwise. Again, there are those who criticise the show for not being the book. Hence, 'book wankers'.
I totally understand criticisms about the show itself. I agree that it was too dark (though if I wanted to be generous, maybe that was a cinematography choice to convey disorientation). I also agree that the show's dialogue has become increasingly simplistic (presumably to cater to the international audience). All of that, and more, are valid reasons to have a go at D&D. But if the show stands alone, judge it by its own merits rather than expecting it be a book.