Sort of. Byrne has an ENORMOUS ego, and believes that only he is the correct choice to steer whatever particular characters he's writing. He's the original "I've got to put my stamp on it" writer. So when he was writing Doom, anything he didn't like that had previously been used was a Doombot. When he was writing Namor, everything we knew was wrong, Namor's really a nice guy, it's just his body can't handle the change in pressue (nevermind that that's what it's designed for), and so on.