There is a lack of cohesion in Final Fantasy X, and in the cinematic RPG itself. The story and gameplay have become two entirely separate mechanisms, operating independently of each other. In Final Fantasy X, half the time you're playing a game, and half the time you're watching a CGI movie. They never overlap. When you reach a certain point in one, Final Fantasy X switches over to the other. What the player does when he's at the wheel has no impact whatsoever on what happens when the game goes back on autopilot. This isn't a role-playing game.
This [http://socksmakepeoplesexy.net/index.php?a=ff10] sums up my problems with JRPGs. The Final Fantasy series, for instance, aren't bad games. The gameplay is solid, the characters are (mostly) likeable and the stories are good. The problem is that the player has absolutely no impact on the story. All you do is move the characters from one cutscene to another. They aren't role-playing games, they're role-watching games; yes, the characters grow and develop, but the player has absolutely nothing to do with it. Pretty much the first thing Tidus says in FFX is "This is my story", and he's right: it's his story, not the player's. The player has nothing to do with it.
To me, this pretty much defeats the entire point of a role-playing game. Frankly, the games industry, by and large*, seems to have forgotten what role-playing is. A role-playing game shouldn't be about stats and spreadsheets, XP and levelling up, but about embodying a character, and experiencing and affecting the world through them. Don't get me wrong, I like stats and XP in my games, but, as Shamus Young has said, it's got to the point now where RPG and role-playing game are pretty much two distinct genres.
*This is, of course, not to say that all developers do this; it's just the majority, particularly when you hear about "RPG elements" being incorporated into other genres.