Hmmm. Don't know then. Maybe he just figures that the comic book market isn't very welcoming to creator owned works so to hell with it. Minutmen looks like New Frontier-lite, or Dark New Frontier.

Was Watchmen one of the first supherhero comics to incorporate McCarthyism into the storyline?

Because it was an interesting angle, and has already been further developed in works like New Frontier. So either that's one more story angle they CAN'T use, or if they do use it, it's old hat by now.