I agree with this wholeheartedly. I've been thinking about the journey and the destination a lot over the past couple of days. Popular TV shows wrestle with this a lot. LOST is probably the best example I can think of in regards to this. As far as GoT is concerned the show was at its best (the first four seasons) when it did a good job balancing the journey and the destination. Season 6's journey wasn't great, but the destination (Battle of the Bastards, The Winds of Winter) were as good as the show ever was in terms if individual episodes.
D&D have only been concerned with the destination this season. They decided they only wanted to do 6 episodes which is their right as the creators of the show and have been racing to get to the twist of Daenerys' descent into madness. Because they rushed through it, her heel turn didn't feel earned. It felt like they were going only for the twist there because this was a show that got so much notoriety for its twists, but it's two biggest twists were logical plot choices. Ned played the game stupidly and naively and he died. Robb played it stupidly and his whole army got wiped out. It was shocking, but it was logical based on the story progression.
The word "Game" is literally in the title of the show and by and large the people who have played the game the best are the ones who have survived to the end. In the two biggest strategic moments of the season before this week Daenerys proved to be totally ineffective as a military strategist. That they just rushed to her using her cheat code (Drogon) to destroy Kings Landing went against the meticulousness the show built over the first 7 seasons and 10 years.