If you don't respect the source material, or fans of it, then why use it in the first place if not to appeal to those fans?
No show or movie adapting a pre-existing character ever succeeded by appealing only to the existing fanbase for the character. To get good enough ratings or ticket sales, you need to attract a larger audience, including people who aren't already fans. And the more groups you can get interested in your intellectual property by adapting it to various different tastes, the bigger your profits overall.
So there's nothing wrong with reinventing Batman's mythos for a more general audience. It worked for
Smallville -- which, remember, spent the first half or more of its run actively avoiding the more comic-book elements and trying to reinterpret Clark Kent's story for the
Dawson's Creek audience.
So that's not what I have a problem with. In principle, there's nothing wrong with trying to reinvent a story to fit a different genre or target a different audience. I just don't like it when the creators of such a project are too self-conscious about, not merely varying from the source material, but actively dismissing it and looking down on it.
No, that would only be the case if he were disinterested in superheroes generally. In the interview, he specifically talks about superheroes on TV. All he says is that he doesn't consider masked heroes to be practical on a format that lives on the emotions comunicated by the faces of the actors.
If that were all he was saying, I'd have no objection. But there's a general sense that he doesn't think superheroes are relatable, that putting on costumes makes them less human, more godlike. I think Marvel has proven effectively over the past 50 years that that isn't the case, and in recent years they've proven that to the general moviegoing public as well as the comics audience. So Heller's assumptions seem rather outdated as well as narrow-minded.
And like I said, it's a strange double standard. Superhero stories are just another kind of costume drama, no different from historical fiction. Why does he think that
Rome can work as a human and relatable tale but a superhero story can't?