Alan Moore wants nothing to do with movie adaptations at all actually, though it seems like a catch 22. He hates hollywood for making stupid movies, but won't actually get involved to make a decent one himself.

Not that they'd let him.

But yes, he read the script and hated it. Then they did a press conference that said he loved it. So he pulled his name from the picture and refused the royalties. One wonders why he sells the rights at all any more.