He most certainly does, his passion for the franchise is enormous. There's an episode of his podcast he does with his producer Scott Mosier where the whole thing is like a minute to minute blow by blow of the entire Dark Knight Rises plot, all from memory. It's insane how good his memory is for all the details, likely cause he's such a huge fan.
Except his Batman comic-books are very, very poor.
No one's saying he's not a fan. Just saying his sensibility at actually writing the character isn't a particularly good one.