So I've briefly scanned through the reviews of the game, and I noticed that most of the negative reviews come from people who didn't make it through the tutorials. And I know firsthand from my friends who have tried the game that they find it confusing.
I personally didn't have this experience. I thought the tactical puzzles were a fun and ingenious way to learn the game.
However, it might be a concern, since it's bringing down the game's rating.