The Dogma director drew the ire of some critics for rewriting a legendary scene from Frank Miller's Batman: Year One, revealing that the Dark Knight suffered a 'bladder spasm' when he confronted Gotham's corrupt elite.
"By the time the Batman bladder thing made it to the page, it had been vetted by a bunch of people who had been doing this for years, and not one of them was like, 'Oh my God! We're going to shake things up with this!'" Smith told CBR.
"They were all like, 'Yeah, this is fine... and wait until you see when we bring Batman back from the caveman days!' That was the big news."
Smith explained that he had spoken to a fireman who confirmed that such incidents can happen when a person is dealing with high temperatures and explosions.
"But meanwhile, most cats on my Twitter feed, who were my age and reading comics back then, were going, 'This is the best Batman I've read in a while,'" said Smith. "Not because it's any good - it's just because it was the Batman they grew up reading, and nobody writes it like that anymore."
The first volume of Smith and artist Walt Flanagan's Batman: The Widening Gyre is available in hardback now.