The point isn't that it took x amount of time, the point is that it contributes absolutely nothing to the game. It doesn't push forward the story, it doesn't develop the characters, it does nothing interesting.
It's padding.
Yeah because 15 hours of my time is HARDLY PLAYING THE GAME.
False.
Err...explain padding. I'll agree it's not a big contribution, but it's not a big downfall. Also, there IS a point of time. If they sent you on a collection quest scouring the world for an hour, that's a lot different than 2 minutes of stick collecting in two areas.
15 hours, yeah that's what I clocked for the first disc. Sure, that's a while but to my standards you should go through a whole game before you start judging it. It may be a bit hypocritical for me I guess as I haven't finished it yet, but I'm not judging it. You're judging the game based on some "fluff" (at least it seems that way)
Finally, name some games that have absolutely no fluff, no breaks in action (somewhat), no stalling points. Please.