Hinata is the most generic moe character ever created. The problem is that she was so generic that the anime, and her fanatics were able to fill her with their fantasies to make her their dream girl.
Still can't forget the fapfest that was the anime rendition of the Pain Arc. They dedicated an ENTIRE episode to her "Confession" when in the manga it was merely a few slides/panels. Not to mention the animation was top notch and silky smooth whereas Naruto vs. Pain later was goofy, comical and downright horrendous.
Also if I remember right, those high quality animation episodes in Naruto cost hundreds of thousands of dollars just for around 22 minutes. But priorities are priorities right?