On the flipside of things, Warner Bros. and Ben Affleck were very clear in the announcement that they made this decision mutually and that it was for the better of the movie.
Especially because there have been reports that the script for the movie is something that both Warner Bros. and Ben Affleck are unhappy with.
Fans of the DC Extended Universe were dealt a pretty big blow yesterday when it was officially announced that Ben Affleck would not be directing the upcoming standalone Batman movie.
While he made it clear that it seems unlikely, he did note that there is a possibility Ben Affleck could bail on The Batman as an actor as well.