She was very specifically hard on Warner Bros CEO Kevin Tsujihara and Justice League director Zack Snyder.
The letter definitely spends a good amount of time calling out the studio for their DC Comics movies, but it doesn’t exclusively take issue with the way that Warner Bros. has handled the DC Extended Universe.
Warner Bros. recently decided to restructure things behind the scenes, shifting around certain studio heads to run various divisions.
In her letter, the former employee claims that behind the scenes, Patty Jenkins’ Wonder Woman is also a mess.